forms - joomla module on submit refresh page -

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i have following situation

joomla 2.5 have 2 modules on page 1. in first module have form submit itself, sets registry variable. (use setuserstate) 2. in second module read registry variable , update view accordingly, (use getuserstate)

the problem is, when first module submits, update self, not page or other module. how can force update on entire page, or atleast notify other module read registry variable.


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