Current value of a repeat variable in a repeating panel

Hello,

I have a repeating panel, which repeats for each value of a variable.

I would like to use the current value of that variable in a link to another dashbaord.
If I try it now, it uses a comma seperated list with all values of that variable.

visualizes correctly in the title (the text between brackets is my repeating variable)
image

but when using in the link in my column style it shows the full list
The config
image

But when clicking the Get_Temperatures_V3, the cell value is OK, but the repeat variable is the concatinated one.
https://koencl.grafana.net/d/9cjb2I2iz/function-detail?orgId=1&var-Customer=HEISTERKAMP&var-Integrator=GATEHOUSE,HEISTERKAMP&var-FunctionName=Get_Temperatures_V3