Restriction data entry for input ready query

Dear All,

I have an input ready query with two structures for rows and columns.

However, I have set one of columns' structure's member as "data can be changed with planning functions", i'm able to enter data for that column. When i execute save function, entered valus are being disapperaed.(not benig written to the cube)

But i want to restrict data entrance for that column. (Like display functionality in BPS)

I know i can protect fields with excel functionality, but we are using web environment.

How can i resolve mentioned issue?

Thanks

Alkan