Using Time as a variable

[daven]

Is it possible to substitute a variable for time, instead of fixing time in a strategy? The ToTime() documentation shows an example where

if (ToTime[0] >= 74500 && ToTime(Time[0]) <= 134500)

I would like to substitute a variable for the 74500 value and the 134500 value
such as "starttradetime" "and endtradetime"

When I do that as below, I get a CS1026 error message. Is this documented somewhere> I tried searching the forum but I must not be phrasing the search properly because I can find nothing about it.
Thanks
DaveN

[NinjaTrader_JoshP]

Just use an int variable. 74500 is an int value.