Can’t really tell much from that screenshot unfortunately. It looks like you have an issue with your featuremerger as the inputs aren’t merging successfully.

Can you share you data and outline what you’re trying to achieve in more detail?

Hi,

First, I exposed autocad_attr_def_default and autocad_attr_def_prompt and changed them to a list. Then, I brought the CSV file exposed it and changed it to a list as well. I also added a counter to be able to merge. When I try to merge, it sometimes works, sometimes it doesn't, but it doesn't bother me because I can find another to merge. 
My big issue is in the final process. When I have to rewrite my list to autocad_attr_def_default and autocad_attr_def_prompt to overwrite the block attribute, it doesn't work even when I use the template. I'm using the list exploder and attribute manager to keep only autocad_attr_def_default and autocad_attr_def_prompt but still not working. I'm trying to figure out what I'm doing wrong. 

I really appreciate if you can help me.

Thanks so much,