Getting compiling error in business rules from a method that generates NACK

Hi 

Getting error message, when calling NACK function that I created. Its working fine on Iris For HeathShare but on HealShare its giving below error msg. Any help.

Error message

Compiling class Hospital.RoutingRules ERROR <Ens>ErrParsingExpression: Error parsing expression 'GenerateNACK("For NewBorn Msg, PID21 Mother Idendentifier should have MRN number",%ErrorStatus)': ERROR <Ens>ErrInvalidName: Invalid name at offset 83   > ERROR #5490: Error running generator for method 'evaluateRuleDefinition:Hospital.RoutingRules' ERROR: Ens.Rule.Definition.cls(evaluateRuleDefinition) of generated code compiling subclass 'Hospital.RoutingRules'     > ERROR #5030: An error occurred while compiling class 'Hospital.RoutingRules' Detected 1 errors during compilation in 1.106s.

This method giving above error. 

ClassMethod GenerateNACK(text As %String, status As %Status) As %Status [ CodeMode = expression, Final ]
{
$$$ERROR($$$GeneralError,$zstrip($piece($System.Status.GetErrorText(status),"#5001:",2),"*C")_"~"_text)
}