Hi,
You can use the series function to access OHLC of any indices. See screenshot:

You can add this condition to your entry condition when building the strategy.
However, do note that currently in our strategy, we do not have support for trigger based entry. We only support “scheduled” entry. So on schedule, entry will be taken only if there is a crossover on that particular day of entry.
I am guessing that this is not what you want. You want a trigger based entry. We have started work to add support for trigger based entry and should complete by end of this month.