Parameters in Property window greyed out?

Parameters in Property window greyed out?

I have been working on a simple project on Zenon 6.22 SPO using a step 7 siemens driver.The project still works well in the runtime. But if i try and go to the property window and select any of the parameters ( say a variable linked to a rectangle block) , it is greyed out and I am unable to change or select it . Even when i add some new block to my picture , the properties associated to that new block are greyed out.
Can I get any help on that?

This is a migrated post! Originally posted on 24.09.2008 by user dak2483. Please be aware that information can be outdated.

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