Character format

Dear All

If i try to change the character format of the Order operation long text, It is not allowing me to do so.

In the script for the Order papers we can change the character format.

But for the operation long text, It won't allow ineither in IW31, IW32 nor in the Task list operation overview screen.

Has any body worked on this functionality, were the character formats are stored in SAP.

Any help will be usefull. Thanks in advance

Regards

Manish