diff --git a/package.json b/package.json
index b23c881c..9bd9a488 100644
--- a/package.json
+++ b/package.json
@@ -22,11 +22,11 @@
     "@mui/lab": "5.0.0-alpha.134",
     "@mui/material": "^5.15.14",
     "@mui/x-date-pickers": "^6.19.5",
-    "@polkadot/api": "11.2.1",
+    "@polkadot/api": "12.0.2",
     "@polkadot/extension-dapp": "0.47.3",
     "@polkadot/extension-inject": "0.47.3",
     "@polkadot/react-identicon": "^3.6.6",
-    "@polkadot/types": "11.2.1",
+    "@polkadot/types": "12.0.2",
     "@polkadot/ui-keyring": "3.6.6",
     "@polkadot/util": "12.6.2",
     "@polkadot/util-crypto": "^12.6.2",
@@ -79,4 +79,4 @@
     "typescript": "^4.7.4",
     "webpack": "^5.81.0"
   }
-}
+}
\ No newline at end of file
diff --git a/src/components/Modals/Orders/Contribution/index.tsx b/src/components/Modals/Orders/Contribution/index.tsx
index 145d9a3f..a36f9904 100644
--- a/src/components/Modals/Orders/Contribution/index.tsx
+++ b/src/components/Modals/Orders/Contribution/index.tsx
@@ -20,7 +20,7 @@ import { useRegionXApi, useRelayApi } from '@/contexts/apis';
 import { ApiState } from '@/contexts/apis/types';
 import { useOrders } from '@/contexts/orders';
 import { useToast } from '@/contexts/toast';
-import { Order } from '@/models';
+import { Order, RELAY_ASSET_ID } from '@/models';
 
 import styles from './index.module.scss';
 
@@ -99,7 +99,8 @@ export const ContributionModal = ({
             toastError(`Failed to contribute to an order ${e}`);
             setWorking(false);
           },
-        }
+        },
+        RELAY_ASSET_ID
       );
     } catch (e: any) {
       setWorking(false);
diff --git a/src/components/Modals/Orders/OrderCreation/index.tsx b/src/components/Modals/Orders/OrderCreation/index.tsx
index d37db411..dc0c8173 100644
--- a/src/components/Modals/Orders/OrderCreation/index.tsx
+++ b/src/components/Modals/Orders/OrderCreation/index.tsx
@@ -33,6 +33,7 @@ import { useSaleInfo } from '@/contexts/sales';
 import { useToast } from '@/contexts/toast';
 
 import styles from './index.module.scss';
+import { RELAY_ASSET_ID } from '@/models';
 
 interface OrderCreationModalProps {
   open: boolean;
@@ -138,7 +139,8 @@ export const OrderCreationModal = ({
             toastError(`Failed to create a new order ${e}`);
             setWorking(false);
           },
-        }
+        },
+        RELAY_ASSET_ID
       );
     } catch (e: any) {
       toastError(`Failed to create a new order. ${e.toString()}`);
diff --git a/src/components/Modals/Regions/Purchase/index.tsx b/src/components/Modals/Regions/Purchase/index.tsx
index 2e6a66d9..acdb7105 100644
--- a/src/components/Modals/Regions/Purchase/index.tsx
+++ b/src/components/Modals/Regions/Purchase/index.tsx
@@ -13,7 +13,7 @@ import { ApiState } from '@/contexts/apis/types';
 import { useMarket } from '@/contexts/market';
 import { useRegions } from '@/contexts/regions';
 import { useToast } from '@/contexts/toast';
-import { Listing } from '@/models';
+import { Listing, RELAY_ASSET_ID } from '@/models';
 
 interface PurchaseModalProps {
   open: boolean;
@@ -87,15 +87,15 @@ export const PurchaseModal = ({
         },
         error: (e) => {
           toastError(
-            `Failed to purchase the region. Error: ${
-              e.errorMessage === 'Error'
-                ? 'Please check your balance.'
-                : e.errorMessage
+            `Failed to purchase the region. Error: ${e.errorMessage === 'Error'
+              ? 'Please check your balance.'
+              : e.errorMessage
             }`
           );
           setWorking(false);
         },
-      }
+      },
+      RELAY_ASSET_ID
     );
   };
 
@@ -113,6 +113,9 @@ export const PurchaseModal = ({
           pb: '1rem',
         }}
       >
+        <Button onClick={onClose} variant='outlined'>
+          Cancel
+        </Button>
         <LoadingButton
           onClick={() => purchaseRegion()}
           variant='contained'
@@ -120,9 +123,6 @@ export const PurchaseModal = ({
         >
           Purchase
         </LoadingButton>
-        <Button onClick={onClose} variant='outlined'>
-          Cancel
-        </Button>
       </DialogActions>
     </Dialog>
   );
diff --git a/src/components/Modals/Regions/Sell/index.tsx b/src/components/Modals/Regions/Sell/index.tsx
index 8e47bbda..49b11051 100644
--- a/src/components/Modals/Regions/Sell/index.tsx
+++ b/src/components/Modals/Regions/Sell/index.tsx
@@ -22,7 +22,7 @@ import { ApiState } from '@/contexts/apis/types';
 import { useMarket } from '@/contexts/market';
 import { useRegions } from '@/contexts/regions';
 import { useToast } from '@/contexts/toast';
-import { RegionMetadata } from '@/models';
+import { RELAY_ASSET_ID, RegionMetadata } from '@/models';
 
 interface SellModalProps {
   open: boolean;
@@ -119,7 +119,8 @@ export const SellModal = ({
           );
           setWorking(false);
         },
-      }
+      },
+      RELAY_ASSET_ID
     );
   };
 
diff --git a/src/components/Regions/IsmpRegionCard/index.tsx b/src/components/Regions/IsmpRegionCard/index.tsx
index 04ee9725..7b04990c 100644
--- a/src/components/Regions/IsmpRegionCard/index.tsx
+++ b/src/components/Regions/IsmpRegionCard/index.tsx
@@ -23,7 +23,7 @@ import { useRegionXApi } from '@/contexts/apis/RegionXApi';
 import { ApiState } from '@/contexts/apis/types';
 import { useRegions } from '@/contexts/regions';
 import { useToast } from '@/contexts/toast';
-import { ISMPRecordStatus, RegionMetadata } from '@/models';
+import { ISMPRecordStatus, RELAY_ASSET_ID, RegionMetadata } from '@/models';
 
 import styles from './index.module.scss';
 
@@ -199,7 +199,8 @@ export const IsmpRegionCard = ({ regionMetadata }: IsmpRegionProps) => {
         error: (e) => {
           toastError(`Failed to request the region record. ${e}`);
         },
-      }
+      },
+      RELAY_ASSET_ID
     );
   };
 
diff --git a/src/contexts/apis/RegionXApi/index.tsx b/src/contexts/apis/RegionXApi/index.tsx
index 48d6b750..f03e8046 100644
--- a/src/contexts/apis/RegionXApi/index.tsx
+++ b/src/contexts/apis/RegionXApi/index.tsx
@@ -78,6 +78,16 @@ const customRpc = {
   },
 };
 
+const signedExtensions = {
+  ChargeAssetTxPayment: {
+    extrinsic: {
+      tip: 'Compact<Balance>',
+      assetId: 'Option<AssetId>',
+    },
+    payload: {},
+  },
+};
+
 const defaultValue = {
   state: { ...initialState },
   disconnectRegionX: (): void => {
@@ -123,7 +133,7 @@ const RegionXApiContextProvider = (props: any) => {
       } catch {
         /** empty error handler */
       }
-      connect(state, url, dispatch, true, types, customRpc);
+      connect(state, url, dispatch, true, types, customRpc, signedExtensions);
     }
   }, [network, state]);
 
diff --git a/src/contexts/apis/common.ts b/src/contexts/apis/common.ts
index b02c0d8a..89757106 100644
--- a/src/contexts/apis/common.ts
+++ b/src/contexts/apis/common.ts
@@ -94,7 +94,8 @@ export const connect = (
   dispatch: any,
   newSocket: boolean,
   types?: any,
-  customRpc?: any
+  customRpc?: any,
+  signedExtensions?: any
 ) => {
   const { apiState, jsonrpc } = state;
 
@@ -106,6 +107,7 @@ export const connect = (
     provider,
     rpc: { ...jsonrpc, ...customRpc },
     types,
+    signedExtensions,
   });
   dispatch({ type: 'CONNECT_INIT', socket });
 
diff --git a/src/hooks/submitExtrinsic.ts b/src/hooks/submitExtrinsic.ts
index 6570e508..f6518508 100644
--- a/src/hooks/submitExtrinsic.ts
+++ b/src/hooks/submitExtrinsic.ts
@@ -4,7 +4,8 @@ import { useConfirm } from 'material-ui-confirm';
 
 import { getBalanceString, sendTx } from '@/utils/functions';
 
-import { TxStatusHandlers } from '@/models';
+import { NATIVE_ASSET_ID, TxStatusHandlers } from '@/models';
+import { numberToU8a } from '@polkadot/util';
 
 export const useSubmitExtrinsic = () => {
   const confirm = useConfirm();
@@ -15,9 +16,14 @@ export const useSubmitExtrinsic = () => {
     tx: SubmittableExtrinsic<'promise', ISubmittableResult>,
     account: AddressOrPair,
     signer: Signer,
-    handlers: TxStatusHandlers
+    handlers: TxStatusHandlers,
+    feePaymentAsset: number = NATIVE_ASSET_ID
   ) => {
-    const info = await tx.paymentInfo(account.toString());
+    console.log(feePaymentAsset);
+    const info = await tx.paymentInfo(
+      account.toString(),
+      feePaymentAsset == NATIVE_ASSET_ID ? {} : { assetId: numberToU8a(feePaymentAsset) }
+    );
     const { partialFee } = info.toPrimitive() as any;
     confirm({
       description: `Estimated gas fee: ${getBalanceString(
@@ -25,7 +31,7 @@ export const useSubmitExtrinsic = () => {
         decimals,
         symbol
       )}`,
-    }).then(() => sendTx(tx, account, signer, handlers));
+    }).then(() => sendTx(tx, account, signer, handlers, feePaymentAsset));
   };
 
   return { submitExtrinsicWithFeeInfo };
diff --git a/src/models/common/consts.ts b/src/models/common/consts.ts
index d1bfa492..e740bf33 100644
--- a/src/models/common/consts.ts
+++ b/src/models/common/consts.ts
@@ -25,3 +25,6 @@ export const SAFE_XCM_VERSION = 3;
 export const BROKER_PALLET_ID = 50;
 
 export const POOLING_TASK_ID = 0;
+
+export const NATIVE_ASSET_ID = 0;
+export const RELAY_ASSET_ID = 1;
diff --git a/src/pages/marketplace.tsx b/src/pages/marketplace.tsx
index 94d0db5a..469e122e 100644
--- a/src/pages/marketplace.tsx
+++ b/src/pages/marketplace.tsx
@@ -29,7 +29,12 @@ import { useRegionXApi } from '@/contexts/apis/RegionXApi';
 import { ApiState } from '@/contexts/apis/types';
 import { useMarket } from '@/contexts/market';
 import { useToast } from '@/contexts/toast';
-import { ContextStatus, Listing, MarketFilterOptions } from '@/models';
+import {
+  ContextStatus,
+  Listing,
+  MarketFilterOptions,
+  RELAY_ASSET_ID,
+} from '@/models';
 
 // eslint-disable-next-line no-unused-vars
 enum SortOption {
@@ -130,7 +135,8 @@ const Marketplace = () => {
           );
           setWorking(false);
         },
-      }
+      },
+      RELAY_ASSET_ID
     );
   };
 
diff --git a/src/utils/functions/api.ts b/src/utils/functions/api.ts
index b85a8c54..e45b36e0 100644
--- a/src/utils/functions/api.ts
+++ b/src/utils/functions/api.ts
@@ -1,18 +1,25 @@
 import { AddressOrPair, SubmittableExtrinsic } from '@polkadot/api/types';
 import { ISubmittableResult, Signer } from '@polkadot/types/types';
 
-import { TxStatusHandlers } from '@/models';
+import { NATIVE_ASSET_ID, TxStatusHandlers } from '@/models';
+import { numberToHex, numberToU8a } from '@polkadot/util';
 
 export const sendTx = async (
   tx: SubmittableExtrinsic<'promise', ISubmittableResult>,
   account: AddressOrPair,
   signer: Signer,
-  handlers: TxStatusHandlers
+  handlers: TxStatusHandlers,
+  feePaymentAsset: number = NATIVE_ASSET_ID
 ) => {
+  const options =
+    feePaymentAsset == NATIVE_ASSET_ID
+      ? { signer }
+      : { signer, assetId: 1, withSignedTransaction: true };
+
   try {
     const unsub = await tx.signAndSend(
       account,
-      { signer },
+      options,
       ({ status, events }) => {
         if (status.isReady) handlers.ready();
         else if (status.isInBlock) handlers.inBlock();
@@ -30,6 +37,7 @@ export const sendTx = async (
       }
     );
   } catch (e) {
+    console.log(e);
     handlers.error(e);
   } finally {
     handlers.finally && handlers.finally();