EPMDimensionOverride works only with key+text(key) from EPMOlapMultiMember

Hi, colleagues!

There is a problem in EPM. I use this guide to make my input form - Multiple member selection for expansion in Report/Input schedule in SAP BPC 10

It is working ok. But EPMDimensionOverride function works only with (key+text) or (key) while EPMOlapMultiMember function retrieves text by default. I have to always press Display button and change from (text) to (key+text). When I want to change my members I need to press Display button and again chose (key+text). It is very uncomfortable for users...

Is it possible to make EPMOlapMultiMember function retrieves (key+text) by default. Another option is to make it retrives always (key+text) without any options.

Thanks!