Randomly select faces from a particular attribute

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Hi guys, I have a terrain that I have broken up a voronoi fracture and it has output an attribute called 'name' which is all the colored sections here:



I'm having real problems trying to randomly select some of these colored sections as primitives (faces) so that they can be saved as a group and then extruded, and used later.
I don't want to randomly select individual faces but randomly select whole groups (as you can see below in red):



If this can be done without VEX that would be great also.

Many Thanks

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Without Vex: I'd probably use a Pack node using your name attribute. Then a Group By Range to randomly group some of your pieces, and then an Unpack, using the transfer group parameter.
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Thanks for the reply, yeah I ended up using a group by range node with another work around to get the desired effect.
I struggle with creating custom attr in houdini and then re-using them elsewhere in the houdini scene to select points or primitives etc....it never seems to work in the way my brain works

Thanks
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