how to change the values of existing variant in test data tab of cbta test script

sir

we have installed CBTA 3.0 SP1 is aligned with ST-TST 300 SP1 and Solution Manager ST 7.1 SP8 .

we have created a test script for va01. Test data container is created for this script and Created variant named VAR01 and attached to the script using test data assignment wizard .

Now variant is  displayed in test data tab of test script.

If a change the values of the variant in test data container , how do I make it replicate in the test data tab of the script?

Can any one suggest a solution?