Updation of one suform from another sobform

hi everybody,

i am using two diffrent sobfomrs on a single FORM.
While using one form some records are being inserted into the base table of another subform.
While working in one subform, it is not directly updating the another subform.
It works only when i click on another subform or the main form...

Is there any solution to directly update one subform by working another subform?????
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