No idea what that is. If you wanted the widget text to be random when this widget is created, all that is needed:
To assign values to widget fields, you drag a wire and then search for what is needed:
Here’s are 3 example of assigning text to widgets:
They advice is not to use 1 & 2, and rightly so. Function binding and variable polling happens every frame. No need to do something 60 times per second when it can be done once. Easier to debug, too.