# obj\_num

If *obj\_num* = 0, the condition will be checked for the current object of the type specified by [obj](https://swatplus.gitbook.io/io-docs/introduction-1/decision-tables/lum.dtl/obj). If *obj\_num* > 0, the condition will be checked for the object with the specified ID (in the object's [connect](https://swatplus.gitbook.io/io-docs/introduction-1/connectivity/hru.con) file) only.&#x20;

Exception: prob\_unif where obj\_num is the first day of the period.&#x20;