From d43e837161c1c80b48749a72ab3fca7b2c0bd778 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stefan=20H=C3=A4rter?= <sha@rother-oss.com>
Date: Tue, 30 Jan 2024 08:33:20 +0100
Subject: [PATCH] Issue #2889: Re-enact rel-10_1 behavior for checkbox ValueSet
 with undef value.

---
 Kernel/System/DynamicField/Driver/Checkbox.pm | 22 ++++++++++++++-----
 1 file changed, 16 insertions(+), 6 deletions(-)

diff --git a/Kernel/System/DynamicField/Driver/Checkbox.pm b/Kernel/System/DynamicField/Driver/Checkbox.pm
index 22b1d80fd6..0eb2dc7f06 100644
--- a/Kernel/System/DynamicField/Driver/Checkbox.pm
+++ b/Kernel/System/DynamicField/Driver/Checkbox.pm
@@ -184,12 +184,22 @@ sub ValueSet {
         }
     }
 
-    my $DBValue = $Self->ValueStructureToDB(
-        Value      => $Param{Value},
-        ValueKey   => $Self->{ValueKey},
-        Set        => $Param{Set},
-        MultiValue => $Param{DynamicFieldConfig}{Config}{MultiValue},
-    );
+    my $DBValue;
+    if ( !defined $Param{Value} ) {
+        $DBValue = [
+            {
+                $Self->{ValueKey} => $Param{Value}
+            },
+        ];
+    }
+    else {
+        $DBValue = $Self->ValueStructureToDB(
+            Value      => $Param{Value},
+            ValueKey   => $Self->{ValueKey},
+            Set        => $Param{Set},
+            MultiValue => $Param{DynamicFieldConfig}{Config}{MultiValue},
+        );
+    }
 
     return $Kernel::OM->Get('Kernel::System::DynamicFieldValue')->ValueSet(
         FieldID  => $Param{DynamicFieldConfig}->{ID},