IDOC change pointer

Hello,

I need to send an IDOC when a field in a custom table was changed.

I already configured the following transaccion:

BD61: Enable Change Pointers Globally

BD50 Enable Change Pointers for a Message Type

SCDO: Create Objet for the table (OBJECT)

BD52: Specify the Fields for Which Change Pointers Are to Be Written.

Then in the event "at save " I call the function OBJECT_WRITE DOCUMENT' but if I don´t run  program RBDMIDOC the IDOC is not send.

I need to configurate something else?

thanks.