I'm working with repeat groups. As soon as I input a number of repeats for the repeat group to run over, I get this error:cannot convert multiple nodes to a raw value. Refine path expression to match only one node.How should I begin to troubleshoot? 
Cannot convert to multiple nodes error message in CommCare
commcare
That repeat group number has to be a single hidden value reference (such as /data/num_children).  You cannot have a raw number like 5 and you also cannot have a calculation such as /data/num_children + 1.  