Modification parameter impossible under catia v6

Hello

For a project in progress I need to modify an already existing 3D model. To do this, I have to (among other things) act on parameters that define some of the pieces.

My problem is that it is impossible for me to change the values of these parameters, the box is grayed out.

I have attached a screenshot.

Really hoping that someone has an idea, the work is due soon...


probleme_parametres.jpg

Up please

Hello 

On your screenshot, the formula selected in bluemodifies the first limit of Extrusion.1 under Main body, the field 2140mm is grayed out because it is evaluated by the formula (External Parameters\LP/2) if you want to free this field you have to delete the formula.

If you are sure that this formula is no longer correct , otherwise you can modify the formula (External Parameters\LP/2 (more or less xxmm))

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