Using texCUBE in Custom Expression

Hi all,

When I call the following HLSL function in a Custom Node:

float4 col = texCUBE(texSamplerState, normalize(vec));

I am unable to figure out how to set the first parameter to the texCUBE function call (the SamplerState).

How do you work with this HLSL function in Blueprint?

Thanks a lot - Mathew