Propensity Score Matching with Multi-category ,who can help me?

[Zhang Zhe]

Dear all,I am now doing a paper,there are 4 categories in my treatment variable PT ,like
PT＝1 for receiving treatment 1 only
PT＝2 for receiving treatment2 only
PT＝3 for receiving treatment1 and 2
PT＝4 for not receiving any treatment
i think syntax such as psmatch2 or nnmatch are not suitable for the case,can anynone help me write the syntax？i
found some package about gpsocre or do－respones but i can't understand ,wish someone can write the full syntax here.. I would be very grateful for your help!

[Zhang Zhe]

Dear all,I am now using teffects ipwra,like this
teffects ipwra (outcome) (treatment x1 x2 x3...) atet control(4) tlevel(3),
but the output of stata like this
invalid teffects ipwra specification; the two model specifications should be enclosed in
parentheses, or you are missing the comma preceding the options
r(198);
Can anyone give me a hand?
Best regards,

[Zhang Zhe]

I thought my posts sink....