How do I work out how many days are between start_string and end_string?
I have tried to do this with eval start_minus_end=end-start/1400 but i am not sure what value start_string is? is it milliseconds?
As an aside I would then like to store this value in a variable that I can somehow use in the predictfunction and assign it to future_timespan e.g. predict kpi1 as kpi1 future_timespan=<VARIABLE> holdback=1