how to read variable set varible in Mutirow Variable set variable

[rajeshgille]

HI There,

I have Field Product Module based on this i need to filter the records in the Multi row varible set variable SITA Service ID but here Both variables are different different Varibale sets.

i tried to filter with referece qualifer 

javascript:new getCIDetailsProductModule().getConfigurationItem();

but in refence qualifier iam getting priduct module value as undefined

script include:

 getConfigurationItem: function() {

        gs.info("28 line" + current.variables.product_module);

        var mrvs = current.variables.product_module;

    },