FPM OVP Form raise event on input field value change

Hi folks,

I am trying to trigger the description look up of an input and display it.

For e.g.:

I have an input field customer number and when a user enters a customer and hits enter then i should be able to display the customer name from the database next to the customer number.

Please advise how this can be achieved in OVP form created using a GUIBB with a feeder class based on standard interface.

Thanks in advance,

Amit