Render Report Page Based on Prompt Selection

[cognoisy]

Hi,

I was wondering if anyone can help. Simmilar to this thread https://www.cognoise.com/index.php?topic=33391.0    I am trying to render pages visible depending on a prompt selected. I have followed the instructions in the thread above from 2017 (the user John Wilkinson particularly) but I am getting the following error message when validating the string:

When I input the string 

Code Select Expand

ParameterValue('ManagerName')

The validation error message I get is:

RSV-VAL-0034 Failed to validate the variable String1.CRX-API-0011 The function name was not found at or near the position '14' in expression: "ParameterValue('ManagerName')"..



When I use ParameterDisplayValue instead:

Code Select Expand

"ParamDisplayValue('ManagerName')

The validation error message I get is:

OP-ERR-0052 Tje expression operator 'ParamValue' is unsupported.