Copy fixed button is not coming with customized security role

Dears,

I have created a new role to provide access of copy function in fixed asset master list page.

I am able to copy in edit mode of the fixed asset form. But not in fixed asset list page. This is doable with system admin rights.

Unfortunately I am unable to do this. 

I have given full rights to below menu item

1. AssetCopy

2. AssetCopyAction

Also I have added the server method to this customized role. Please help me with further possibility

More over there is a default privilege for copy asset I tried that also.