Expression Builder of Connection Manager not showing Variables

Question

I\'m having this exact same problem I\'ve been looking aroung but this is the only place I\'ve seen the same issue and it is not resolved.

Does anyone knows what the

Answer 1

i had the same problem and it was because the flat file source was set as a project source so i had to convert it into a package connection.

Right-click on the source and choose convert to package connection

Maybe this will help.