@ManikyaChakriJamG  Put your custom control inside a Dynamic Layout and trigger the action from the control itself using Pega’s supported event hook, not a hidden button. In your control’s JS, call pega.ui.Events.fireEvent (or the Pega event API available in your version) on the control’s DOM element when the value changes, and pass the property name so Pega treats it like a real field update. Then configure your Event Action set on that same control event (for example, Change) to run the refresh or validate. Make sure the control has the correct name and data-ctl/property binding attributes so the engine knows which property changed. Once Pega recognizes the change event as coming from the bound property, the refresh won’t wipe the error and the action set will execute normally.