Comparing values of different date

Hi,
How do I write Advance Sentinal code to compare values from different dates.
For example : Comparing “Intraday change of tow different dates”

I tried this
(DateString(‘2020-10-24’) IntraDayChange(‘NSE:AARTIIND’))<(DateString(‘2020-12-26’) IntraDayChange(‘NSE:AARTIIND’))

i showed error message,“Invalid Syntax in the trigger expression.”

@Arockiya_Raja can you.