Apply height option to all images

[api2001]

Hi,

I have a HTML page showing several "fresconized" thumbnails.
If I click one thumbnail, the light gallery appears showing the full image in full resolution, which is unfortun. far to large.
Therefore I used the "height: 500" option to scale down the full image to a fixed height.
Unfortunately this is only applied for the first image loaded in the light gallery. If I afterwards scroll / cursorkey through the images all the others appear in full res again, although each fresco link has the same data-fresco-options.

This is what I did:

<div class="image">
			<a href="images/2021-02-24_101510_img01_vokam1.jpg"			  
			  class="fresco"
			  data-fresco-group="vokam1"
			  data-fresco-options="height: 500"			  		  
			  data-fresco-group-options="overflow: true, thumbnails: 'horizontal', onClick: 'close'"			  		  
			  data-fresco-caption="VoKam1 2021-02-24 11:15:10">
			  <img src="images/thumb_2021-02-24_101510_img01_vokam1.jpg" alt="" class="thumb" /><br/>		  
			</a>
			<p>2021-02-24 11:15:10</p>
		</div>

				
		<div class="image">
			<a href="images/2021-02-24_100015_img01_vokam1.jpg"			  
			  class="fresco"
			  data-fresco-group="vokam1"
			  data-fresco-options="height: 500"			  		  
			  data-fresco-caption="VoKam1 2021-02-24 11:00:15">
			  <img src="images/thumb_2021-02-24_100015_img01_vokam1.jpg" alt="" class="thumb" /><br/>		  
			</a>
			<p>2021-02-24 11:00:15</p>
		</div>

				
		<div class="image">
			<a href="images/2021-02-24_094510_img01_vokam1.jpg"			  
			  class="fresco"
			  data-fresco-group="vokam1"
			  data-fresco-options="height: 500"
			  		  
			  data-fresco-caption="VoKam1 2021-02-24 10:45:10">
			  <img src="images/thumb_2021-02-24_094510_img01_vokam1.jpg" alt="" class="thumb" /><br/>		  
			</a>
			<p>2021-02-24 10:45:10</p>
		</div>

Any help appreciated.
Best regards, APi