Im trying to load a value (string) into my SPD 2010 workflow from an external list. I want to save that value in a workflow variable, so I lookup for that external list and set up my filter's parameters. After I run the workflow it just finishes normally with no error, but the value is always blank. I've searched the web looking for an answer but it seems to me being the only one with that problem, i found some posts talking about problems with workflows and external list but they instead than me get security errors when running the workflow.
I will appreciate any help from you. TY.