When I remote R&S network analyzer,I can't store a file by 'Print to file'?

I try store the analyzer's diagram to specified path us follow python code,but failed,who can tell me why?

inst = res.open_resource('TCPIP::10.3.19.100::inst0')print(inst.query('*IDN?'))inst.write("HCOPy:DEVice:LANGuage BMP")inst.write("MMEMory:NAME 'C:\25.bmp'")inst.write("HCOP:MIT:LOGO ON; TIME ON")inst.write("HCOP:MPAG:WIND ALL")inst.write("HCOP:DEST'MMEM'; :HCOP")```