entry callback question

Hi,

I'm using the NetExpress v3.1 and I had an entry callback in my program, as below;

000-Program-Body section.
     invoke entrycallback "new" using z"onCloudError"
                            returning osException
     invoke exceptmgr "register" using oleExceptMgr osException

           :
           :
           :

888-Callback section.
entry "onCloudError" using by reference lnkErrObject
                           by reference lnkErrNumber
                           by reference lnkErrText.

  ....{do some display} and..

  go to 000-Program-Body.

I need to go back to the top of my program, and just continue with the normal flow (again) and registering the callback (again)... is there any problem with the computer looping back without "cancelling" the callback before "registering" again??