Thanks for the solution and explanation Yannick. It's working perfectly now and I can finish converting my scripts.

I'm trying to convert a working COFFEE script for changing the modeling axis to Python. Updated tool data is printed to the Console but the Axis parameter is not changing.

import c4d

def main():
    tool_dat = doc.GetActiveToolData()
    tool_dat[c4d.MDATA_AXIS_MODE] = c4d.MDATA_AXIS_MODE_FREE
    c4d.EventAdd()

if __name__=='__main__':
    main()