How to get the name of high variables in PcodeBlockBasic?

[shinibufa]

Hello, I wanna get parameters' high name of a function. And Here is a simplelified snippet of my code:

dRes_main = decomplib.decompileFunction(mainFunction, 20, monitor)
hfunction_main = dRes_main.getHighFunction()
pstBlocks = hfunction_main.getBasicBlocks()
...
for pstBlock in pstBlocks:
     if pcode.getMnemonic() == "CALL":
          varnodes = pcode.getInputs()
          for i in range(1, len(varnodes)):
                print(varnodes[i].getHigh().getName()

But I got "UNNAMED" instead of "local_xx". Could someone please provide some guidance on this issue? Your assistance would be greatly appreciated. Thank you.