Set automatic time cycle in a event catch timer

Question

I have a event catch timer on human task.
I must set a time cycle using an expression;
I have defined the variable "timeOut" where there is the value in day ( 2 day)
I have tried to use expression --> Xpath and I followed as described in the Oracle documentation
but the timer does not work
How can I do?
Thanks
Elena

Answer 1

Thanks.
I have tried :
1) I have defined in script task a variable expireTime (string type) = concat('PT','2','M') and in event catch time set "time cycle" -->"use expression" --> Xpath --> bpmn:getDataObject('expireString') , so is OK
2) I have defined define in script task a variable timeExpire = 2 (string type) and in event catch time set "time cycle" -->"use expression" --> Xpath --> bpmn:getDataObject(concat('PT', timeExpire,'M')) , but in this case the process hangs
In the second case, where do I wrong ?
Elena
P.S. :
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