Report Title (runtime variable)

We are just trying to understand how the runtime variable works? There is a custom batch report in which a system variable has been defined as "Runtime: Company Title" in the Page Header section. Interestingly, there is no Event Rule overridden for this variable and it is printing a random value such as "xxxxxxx yyyyy - 26/05/2017"

xxxxxxx - Name of Company

yyyyy - Name of environment

Checked the log and it is printing the value directly:

Processing Do Object SysCOTtl in Section Page Header

Printing Object Value =

Any inputs are much appreciated.

Regards,

Andy