CST - Can anybody help me in simulating an ablative layer over the radome surface using CST MWS?

I have modelled a tangent-ogive shaped radome that encloses an antenna. Now i want to provide an ablative layer over the outer radome surface. Then I need to do a temperature study for the radome such that at high temperature, the ablative layer goes off leaving only char residue over the radome surface. With this I need to study the effect of char residue on the underlying antenna. Is there a way the model this scenario in CST MWS?

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