"set" with file, lens, path and value throws error

[lovelinuxalot]

When I try to run the command through ansible playbook which has a play to configure a config file:
augeas command="set" lens="Spacevars.simple_lns" file="/usr.share/controlm/ctm/data/CONFIG.dat" path="AGENT_OWNER" value="root"

I get an error in the play:
AttributeError: 'Augeas' object has no attribute 'transform'\r\n"

And i checked the code and I cannot see any function for the class object with name "transform"