Convert Design Time Prompt "Members" Strings to MDX Format

@CalcMgrMDXDataCopy

Is there a way to convert a Members DTP Array to MDX format to pass to the @CalcMgrMDXDataCopy function?  The members are passed with the standard essbase quotes: (i.e. {"Member1","Member2"}), but I need them to be converted to MDX format (i.e. {[Member1],[Member2]}).  I've tried using the @REPLACEALL function on the DTP variable, but it doesn't seem to work at all.  Any ideas would be appreciated.