I am intending to establish a multilevel ordinal probit model. The dependent variables is injury severities and the model has three level: injury level, vehicle level and crash level. The estimation codes are as below:

meoprobit injuryextent i.age i.positioninveh i.thrownout i.seatbelt i.vehyear || reportid:|| vehid:
However, when I use the order "estat icc" to calculate the intraclass terms, the Stata presents that "requested action not valid after most recent estimation command". Is it the error of my data construction, or some else? Do you know how to calculate the intraclass terms in this situation?