selecting multiple properties in dimension override

Hi Gurus,

I am trying to override my Project dimension which has two properties which are also dimensions in my case.

Property 1: PI

Property 2 PH

I have put dimensionproperty values in cell c7 and c8 respectively

tried both of these but there is an error

SYNTAX 1: =EPMDimensionOverride("000","project",PI=C7;PH=C8)

SYNTAX 2: = EPMDimensionOverride("000",project","PI="&C7;"PH="&C8)

Please help

Thanks