Planning Layout - Switch on/off

Hello,

I want to manage the input readiness of a data-entry layout via buttons.

In the application start-up, I set the 'InputReadiness' to 'true'. And it is working fine.

Then I try to switch off the 'InputReadiness' via a button with script: "DS_1.configureInputReadiness(false);"

it switches off the layout but gives an error message as well (Error message: Unable to get property 'replace' of undefined or null reference).

Also loading icon does not disappear.

What would be the problem here?

Thank you in advance.

Ozan