Threshold Setup not working for Exception setup (11.5.10.2)

 Hi ,

    My client Requirment is for one supplier need to give limit for Tax deduction.

Ex: Let say IBM is my supplier for this supplier '0' to '1000000' 0% TDS should be deduct.

from 1000001 to 10% TDS should be deduct. for this i have done below setups.

1. Defined 2 Taxes with 0% and 10% (setup-tax-taxes)

2. Defined Threshold setup with threshold type CUMULATIVE.(setp-tax-India-threshold setup)

given amount slabs:

0 to 1000000 0%

1000001 to   10%

enabled exception setup

asigned operating unit and tax rates

and clicked on asigne vendors tab selected vendor.

3. created invoice for 1100000 and validated .

but tds not deducted .pls help me how to resolve this.

Thanks