melogit - stata error - only one fixed effects

[Rose Matthews]

Hi all

I am trying to do a mixed multilevel logistic regression

random effects (doctored)

melogit var1 c.var2 c.var3 || doctorid, vce(robust) or level(95)

Stata gives me an error 'Only one fixed effects equation allowed'

I've just stata help file and I can see my syntax seems ok
Any help diagnosing the problem would be appreciated

[Leonardo Guizzetti]

You are missing a colon after doctorid.

melogit var1 c.var2 c.var3 || doctorid : , vce(robust) or level(95)

[Rose Matthews]

thanks