Disable radio button in Status Profile for Creator

Hi,

I have done a configuration on status profile for Sales Contract Release Strategy.

The issue here is the Creator of Sales Contract is able to approve the Sales Contract that she created.

My Configuration of Status Profile as the following :-

Authorization Code ZAU0001 = Creator

Status Profile                : Z_AU_CON

Authorization Object      : B_USERSTAT

Obj Category                : VBK

T/Code                        : VA41, VA42 and VA43

Create a new role         : Sales Contract Creator

Authorization Code ZAU0002 = Approver

Status Profile                 :  Z_AU_CON

Authorization Object       : B_USERSTAT

Obj Category                 :  VBK

T/Code                         :  VA42 and VA43

Create a new role          :  Sales Contract Approver

The difference between the above role are the Approvercannot create a Sales Contract but can only Approve or Reject and Displaythe Sales Contract while Creator can Create, Change and Display but not able to Approve or Reject the Sales Contract.

I have done my unit testing everything is working fine except the Creator can still approve the Sales Contract refer to screen- capture  below:-

In my business requirement only Approver  which i have maintained in Auth code ZAU00002  can Release or Reject the Sales Contract.

According to my basis guy this cannot be achieved because Creator has Role of Create/Change and Sales Contract can only be released via transaction VA42. May i know if anybody has solution for this issue?

Thanks

Sherry