Ventana software support forum

How do I solve this error?
It seems like Vensim automatically integrates with months instead of years.

Error in units for the following equation:
Rabbit Population =
INTEG( birth rate
- death rate ,
1000)
Rabbit Population --> rabbit
birth rate --> rabbit/Year
death rate --> rabbit/Year

Analysis of units error:
Right hand and left hand units do not match
Rabbit Population
Has units: rabbit
INTEG( birth rate
- death rate ,
1000)
Has units: Month*rabbit/Year

Hi

Vensim integrates using the time step specified in the settings, which in your case must be one month.
And you use as rate rabbit/ year, and should use rabbit / month.
Regards.
J.J. Laublé

Thank you - I'm still learning the program...