[mapserver-users] not able to label a feature with concatenated strings (data field + string literal)

[Ralf Trier]

I' am updated to PHP-Script Version 6.0. 

I older version I labeled features with concatenated strings (data field
+ string literal). 

The documentation of the class section says that Text can be set like:  
Text ([FIRSTNAME],[LASTNAME])
According to the Migration Guide I can use
TEXT ([area] + ' acres')
TEXT '[area] acres'
None of these 3 versions work. 

Mostly I get an error like:
yyparse(): Expression parser error. syntax error
msShapeGetAnnotation: Expression parser error. Failed to process text
expression: 

Any idea, what I can do.