Vat on Freight Charges

Hi,

There is a requirement where in 5% Vat to be calculated on the freight charges.

We have created a Frieght Pricing Condition as "FRXX".

Similarly we have a Tax Condition as "FRXY" in our tax process.

Now the thing is that when in Pricing we manually put say an amount of 50 [FRXX = 50]

Automatically in the Tax Cond FRXY should also be populated with the same value.i.e it should be like [FRXY=50]

How to get that ?????

regards

joe