How to connect a texture to a material property in BP ?

Hi,
my goal is to use an Asset Action Utility script to create a material for each selected texture in the content drawer. Though I found a python script that I adapted to my case and that works quite well, as I’m learning Unreal, I want to make a BP version that does the same (but by duplicating a base mat instead of creating a new one like in the python script)>
I’m stuck at the point where I only miss the connection between the Texture and the material property… I don’t understand whee is my error … Any idea ?

Thanks a lot for any help you may provide !