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Chandralekha Manoharan 7Chandralekha Manoharan 7 

I want to call a visualforce page from a button of data type formula from the detail of a record and disable it after clicking..How it can be done?

1. Create a formula field of data type text in the object.
2. Add the field to the page layout.
3. Use formula like below

IF( City == 'ABC', HYPERLINK( '/apex/Sample', 'VFLink') , '' )

Magulan Duraipandian