allowing admins to edit channels

hello TS team,

i am trying to allow my admins the ability to edit rooms that they have high enough permissions with.
for example.
server admin = 75
admin = 60
if a channel is set higher then 61 then admin level cannot modify it.

my problem is that i have granted access for admins to do this.
i_channel_needed_permission_modify_power "Value = 60 skip[] Negate[] Grant=75"
i_channel_permission_modify_power "Value = 60 skip[] Negate[] Grant=75"

admins can view the channel permissions they just cannot modify them, even when modify power = 0
it appears when when i look at permission overview at admin & server admin apart from 60 & 75 grant power its all fine.
i get error message of "insufficient permission modify power" and on the channel permissions tab i get error message of "error applying permissions".

i believe this could be a simple fix however nothing that i have read on all forums have been able to help me.

allowing admins to edit channels