Use an expresion for help text

pcsquirrel

Hello,

i need to set "Help Text" of an caption to an dynamic value (expression).
"Help Text" is a static field so i decided to create a "Named Expression" with called "test" with the expression "row["CUSTOMERNAME"]".

in the onPrepare Event of the label set:
this.helpText = reportContext.evaluate(this.getNamedExpression('test'))

if i run the report i get an error:

There are errors evaluating script "this.helpText = reportContext.evaluate(this.getNamedExpression('test'))":
Wrapped org.eclipse.birt.report.engine.api.EngineException: There are errors evaluating script "row["CUSTOMERNAME"]":
ReferenceError: "row" is not defined. (<inline>#1). (/report/body/table[@id=&quot;10"]/detail/row/cell[@id=&quot;16"]/data/method[@name=&quot;onPrepare"]#1)


i unterstand the error. the reportContext does not know anything of the row.

i must evaluate the expression in the context of the row or the reportitem(caption) but how can i do that?

kind regards

p.c.squirrel

bhanley

Is the goal to display some text when the user hovers over a value in a table? I am not quite sure what the end goal is here, but with some additional detail we should be able to map out a solution pretty quickly.