Hi @Parvane_Zand,
Welcome to eazyBI community!
It seems you were missing the function CoalesceEmpty, which helps determine what to return if the field is empty. Try the formula below and see if it returns the expected results
IIF(
CoalesceEmpty([Measures].[Object Volume Host],"") MATCHES
CoalesceEmpty([Measures].[Object Volume Server Host],""),
"Equal",
"Not Equal"
)
Best wishes,
Elita from support@eazybi.com