[rules-users] Problem using parameter for n-of-m flow join

I'm defining my "n" in an action node prior to the join: kcontext.setVariable( "numTablesCurrentBatch", batch.getTables().size() ); For the "n" parameter of my n-of-m join, I am using #{numTablesCurrentBatch} as the passed variable. When I run my workflow I get the following exception: java.lang.IllegalArgumentException: Could not find variable numTablesCurrentBatch when executing join I apologize for asking a repeat question, but I've exhausted Google in trying to resolve this issue. Does anyone have experience with this type of situation? Thanks, Mike