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Can any one please help me on below requirement.
Thanks in advance.
peek or previous
if(FieldGroup = previous(FieldGroup) and FieldCross <> previous(FieldCross), peek('Crosswert') & '!'& FieldCross ,FieldCross) as Crosswert,
i guess the IsNull-function performs better...
The IsNull function tests if the value of an expression is NULL and if so, returns -1 (True), otherwise 0 (False).