EPM add-in: cell reference changed

Hi,

I use cell reference in my Input Form. Column selection is based on Time property. When selection is changed reference is also
changed, for example from:

=EPMMemberProperty("";I7;"DATE_LAST")

to

=EPMMemberProperty("";H7;"DATE_LAST")

This is
relevant information about release:

- BPC version CPMBPC Release = 800, Level = 0008 

- BPC version POASBC Release = 100_730, Level = 0008

- BW version SAP_BW Release = 730, Level = 0008

Thank you for any ideas.

Ivan