[TYPO3-dev] How to set default values in flexforms from extension

[Tim Wentzlau]

Hi List

I have one field (dropdown) in a flexform for a FE-plugin that should 
control the values of the other fields in the flexform.

When the user selects a new value a function in my extension should be 
called and the other fields in the flexform should be filled.

Has any body done that before (I have googled for an answer without luck)

Tim