Can you upload a sample workbook that demonstrates what you are doing? (Even if you just hack up a superstore example.)
My 2 sub-parameter controls are in a string list with calculated fields. So to answer your question, I need a parameter that selects the other 2 parameter controls' string values ( so the parameters). My 2 sub-parameter controls have calculated fields, I need my overlying parameter control to select the string list values (parameter) from the 2 sub-parameters that have the same string listings.
I'm having a hard time following your description.
Please upload a sample workbook. If proprietary data is an issue, anonymize your data as shown in the video in the attached link: