That can definitely be achieved, but it means running a macro instead of clicking on the sheet whenever you need a Will save. Here is the section of the wiki with the template you're using (I think). At a guess, either the {{name}}, {{characterid}} or {{rightbanner}} will be the field you're looking for. If you mouse over the bit on the character sheet, does a hover pop-up tell you the name of the Attribute? If not, you'll have to find it on the Attributes & Abilities page. The second thing we need is the macro output. After you do that Will saving throw above, click the cursor into the chat bar, push the UP key, then copy and paste the code into notepad or similar (or here, if you need a hand). You'll then need to change the @{character_name} reference to whatever the Attribute name from above is. You'd then need to save that as a macro and run it instead of clicking on the sheet when you roll a save. If you wanted to permanently change the behaviour of the sheet for anyone who uses it, that's custom character sheet territory.