Transparent Texture (PNG) with opaque material

ok thanks. :(
I will try to find a workaround. I appreciate the time and effort you made to help me.

My project is to upload png image by user et to put it on an almost transparent object (like a color semi transparent object).

could you attach your blend test file working ? thanks

Finaly i did it ! Thanks for support, you save my day !

Thanks Vlad