I am trying to use E-SURGE to run a multi-event model with a fixed effect of time and a random effect of study area (Plot) on both steps of the transition (survival+transition). My model has 3 states, 7 events, 2 age classes and 8 occasions. Plot has 12 levels and all individuals are attributed to one Plot (i.e. there are no missing values).

I have successfully run models with Plot as a fixed effect (both t+Plot and t.Plot). Using individual as random effect (t+Plot+ind) also works fine. However, I cannot write the correct syntax to make GEMACO understand Plot as random.

I have tried the following phrases:

t+r(Plot) -> Call GEMACO does not work

t+random(Plot) -> Call GEMACO does not work

t+[i+r(Plot)] -> Call GEMACO works but I get errors when running the model

My E-SURGE version is 2.1.4.

Are these details enough to pinpoint my error?

Thank you for your help!