Error in last night's hint

In helping a couple of people today, I realized that I mistyped my hint last night. This is how it should read.

a[1:3} ~ dmulti(x.a[], N.a)
N.a <- sum(n.a[])



# priors

y.a[1] ~ dexp(1)

y.a[2] ~ dexp(2)

y.a[3] ~ desp(3)

x.a[1] <- y.a[1]/sum(y.a[])

x.a[2] <- y.a[2]/sum(y.a[])

x.a[3] <- y.a[3]/sum(y.a[])

The difference is in the last three lines. x.a[] is just calculated from the y.a[], so you connect the two with a "<-" instead of a "~". You only use the "~" when you're talking about observations on the left side of the equation having a particular probability distribution.

Sorry for the confustion. That's what I get for typing hints late (for me) at night.