I Need to hide/disable "Modify View" button in ribbon

Question

Dear All,

 

I have a scenario like i need to hide a "Modify View" Button from ribbon control for all users except spadmin/system account.

 

I have made hidden through CSS

<style type="text/css">

#Ribbon\.Library\.CustomViews\.ModifyView-Medium

{

display:none;

}

</style>

 

I have used security trimmed control in master page

<Sharepoint:SPSecurityTrimmedControl runat=”server” Permissions=”FullMask”>
Only users with FullMask permissions will be able to see this content.

<style type="text/css">

#Ribbon\.Library\.CustomViews\.ModifyView-Medium

{

display:block;

}

</style>

</SharePoint:SPSecurityTrimmedControl> 

 

 

 

Tried with changing Permissions to "ManageWeb" and etc.

 i reffered this for permissions

http://www.robertkuzma.com/2011/03/security-trimmed-controls-in-sharepoint/ 

 

 

 Have not found any solution please kindly help me out.

 

 

Many thanks in advance.

 

Regards,

Ravi Kumar S