Why psspy.accc_with_dsp_3 function doesn't update .acc solution file?

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Hello All, I'm new to this group and also to PSS/E python. I'm developing a python code to run ACCC with the inputs as sub, mon, con and dfx files using the function psspy.acccwithdsp_3 as shown below:

psspy.accc_with_dsp_3
( 
    0.5,
    [0,0,0,0,0,2,0,0,0,0,0],
    'MON',
    dfxFileName,
    accFileName,
    "",
    "",
    ''
)

The problem/questions that I have are:

1. Why does this function expects the name of the solution file .acc as an input and why can't it create it automatically via program?
2. Though I have passed the path and name of the solution file, the file is not updated with the solution data after running the above function (running above function doesn't throws any error).

Thanks in advance.