Design Table parameter

Hai,

I am having a top level assembly with two sub-assemblies. Sub-assembly1 have parts P1,P2 and P3 and Sub-assembly2 have parts P9,P8 and P7. I want to suppress and resolve parts P2 and P9 using design table in the top level assembly. I had tried with parameter \$STATE@P2<1>@sub-assembly1

but it fails and says " column header had invalid feature name". There is no configuraion in the part/sub-assembly and top level assembly. I want to control the parts only in top level assembly. How to do that?

SolidworksAssemblies