Back to trading- New high price

Hi ,

is there any way to identify when a fav horses hits a new high price?

For example  the horse started at 7 now for the last three hours the pric of the fav has not been above 3.00 , in the last ten minutes before the statrt on the race the price goes to 3.1 i now want to back the horse as its hit a new high price.

What formula  could i use to do this?

minbp_{minutes}, minlp_{minutes}	floating point	The minimum value of the back or lay price within the latest time specified by {minutes}. The variable minbp_{minutes} returns back price and minlp_{minutes} - lay price. If it's been less than {minutes} since you started refreshing the market, these figures will show the maximum or minimum value since the beginning of the refresh. The time should not exceed the market's history depth.
maxbp_{minutes}, maxlp_{minutes}	floating point	The maximum value of the back or lay price within the latest time specified by {minutes}. The variable maxbp_{minutes} returns back price and maxlp_{minutes} - lay price. For more details see the previous option.