Highest and Lowest using datetime

[Simo Ilmari Dodero]

Hello I'd like to know if there is a function that return highest and lowest price reached during a period expressed in datetime format (i saw iHighest but it uses the number of bar, not date-time)

 Is this possible?  (As I know when the price reaches a level and when it reaches another level in another time,later..)

 

(Hope you understand my question, sorry for my English.)

 Thank You !! 

[Keith Watford]

Use iBarShift() to find the index of the bars first

[Simo Ilmari Dodero]

Keith Watford:
Use iBarShift() to find the index of the bars first

Thank You !!

I didn't see it !