Building Dynamic Interfaces

I'm trying to add a section to your interface that will only display when the user selects
a maintenance request, and will display details for the selected request by repurposing an
existing interface object & this is the code.

I'm getting syntax error mentioning "Expression evaluation error at function a!localVariables parameter 3 [line 63]: Invalid list operator 'a!sectionlayout' (expecting comma)" but all Parentheses are closed properly & commas were added as per syntax.

How can I fix this ?