public String getConstraintText(String textForm, IAnswerData attemptedValue)
{
if (mTreeElement.getConstraint() == null)
{
return(null);
}
else
{
EvaluationContext ec = new EvaluationContext(form.exprEvalContext, mTreeElement.getRef());
if (textForm != null)
{
ec.OutputTextForm = textForm;
}
if (attemptedValue != null)
{
ec.isConstraint = true;
ec.candidateValue = attemptedValue;
}
return(mTreeElement.getConstraint().getConstraintMessage(ec, form.Instance));
}
}