returnweights option for sdid

[Mansour Mohseni]

Hi all
In the paper "On Synthetic Difference-in-Differences and Related Estimation Methods in Stata" section 4.5, Other Parameters, the authors mentioned that to obtain weights we can use returnweights option; however, it seem that this option is not available anymore. As a result, I am trying to get those using e(lambda)[1..time,1] and e(omgea)[1..Nc]. To generate the weight I am using following code:

matrix lambda = e(lambda)[1..12,1]
matrix omega = e(omega)[1..5620,1]
g weight = lambda * omega

I get this error: matrix operators that return matrices not allowed in this context.
I really appreciate it if you please help me to get those weights as mentioned in the paper

[Mansour Mohseni]

I managed to get weights using lambda * omega using the code below (then I merged all the weight datasets with the original dataset) for all control units for pre-intervention times. I think the weights of the treated units should be 1 but I am not sure about the weights of control units for post-intervention time.

matrix omega = e(omega)[1..5619,1]
matrix lambda = e(lambda)[1..12,1]
g weights = .
forvalues b=1/12{
    matrix d`b' = lambda[`b',1] * omega
    preserve
    keep if id>=1811 & id<= 7429 & time==`b'
    svmat d`b'
    replace weights = d`b'
    keep id time weights
    save weight`b', replace
    restore
    
}