This function is typically used in diagram text schemes. It allows you to specify a data reference, and
text to be output if, and only, if data is not found for the specified data reference.
See also ExistsText, CombineText and
ForceText.
Minimum FH Version:
3
No. of Parameters:
2
Return Type:
Text
Parameter 1:
A data reference (any kind).
Parameter 2:
The text to output if the data reference ‘fails’ (i.e. does not match any data).