Function RegisterCallback

RegisterCallback(
    sidebarId: string,
    eventName: string,
    callback: OSGeneric,
): string
Function to register a provider callback
Parameters
- sidebarId: string
- eventName: string
- callback: OSGeneric
Returns string
{string} Return Message Success or message of error info if it's the case.

Export
- Defined in OutSystems/OSUI/Patterns/SidebarAPI.ts:174