exponential transformation of dependent variable in Zelig

I apologize in advance if this question is too esoteric. I am using the Zelig package in R with a log-log regression model:

z.out <- zelig(lnDONATIONS ~ lnPRICE + lnFUNDRAISING + lnAGE, model = "ls", data = mydata)
x.out <- setx(z.out)
s.out <- sim(z.out, x = x.out)
summary(s.out)
plot(s.out)

This works fine, but I am trying to implement something that is allowed in the Stata-based 'precursor' to Zelig (clarify); specifically, in the clarify package, after the 'setx' command, you can type 开发者_StackOverflow社区in simqi, tfunc(exp) in order to get the expected values based on the exponential transformation of the dependent variable (the simqi command in Stata is analogous to the sim comamnd in R/Zelig). My question is, can this post-setx exponential transformation be done in R with the Zelig package, and if so, how? The very extensive Zelig documentation does not seem to have an analogue to the 'tfunc' command in the clarify package.

Thanks in advance for any insights.