Extreme Bound Analysis using Ordered Probit

Hi Everyone,
I am using Extreme Bound analysis (EBA). my dependent variable is ordinal. So i want to use ordered probit regression for computing EBA. I am using following code.

ebaresult1 <- eba(formula= A170~ X003 + health | A001 + A002 | F114 + F115 ,reg.fun= polr, method= "probit", data=data)

I am not getting proper result. Beta coefficient and in other outcome it is showing NA. all the result having NA only. Kindly help me to sort this issue.