How to modify the pcode basic blocks and CFG of a binary file and re-decompile them?

[wanchouchou]

I am dealing with an obfuscated ARM binary file with GHIDRA. I have found out the obfuscation patterns, so I want to modified the pcode basic blocks to remove some useless pcodes and re-construct the CFG by writing a GHIDRA script. Finally, I also want to invoke the decompiler to generate C code upon these modified pcode basic blocks, but I failed.

I wondered whether I could modify the pcode basic blocks and it's CFG？Is it possible to invoke the decompiler to generate C code upon these modified pcode basic blocks and CFG?

If the answer is yes, please tell me how to implement it. Thanks in advance for your time.