Increase in Remuneration of WTD

Hello friends..

Please clarify the issue.

A listed company appointed WTD in July, 2007 by passsing BOard Resolution on remuneration of Rs. 50000/-. In AGM held on 10.09.2007 members approval was taken with authority to Board of Diretors to vary the terms and conditions of his appointment as agreed by him so as not to exceed limits specified in Schedule XIII.

After that the company increased his remuneration 2 times by passing board resolution and filing Form 23.

My query is whether filing of Form 23 is sufficient and only Board reolution is sufficient or shareholders resolution is required for such increase.

Thanks & Regards