Hi,
I am trying to use the message tool to automatically stop my workflow if there are any records coming out of the tool prior the message tool. For some reason, I am getting the 'Parse Error at Char 0: Unkown variable'. I followed the instruction on this YouTube video but it does not work for me. I am only trying to check if there are any records so not sure why there would be any error.. Any idea how to fix this?
YouTube link: https://youtu.be/W_WJiTJa8u0?si=pM9aF_2liC-rrDxT
Message tool configuration:

Parse Error:
