why script , use the data source : one row blank , next row your data and loop

Now we are getting more details in what you want to achieve ;-)

While matching the value might be not exact a script is indeed the way to go

have loop in a script turning the displaying on/off (SetTextVisible) with a pause in between with delay based on the data

You mean give you the script ?

in a continuous loop read the heartbeat value from the title (*)
convert it to a numeric value

do a little test to check if between a range and if value has changed (matter of a bit more efficientand cleaner display later)

to make it look like a beat show the text or any other title element to depict the beating by turning its visibility on

Pause for a short bit

Hide the element

Pause for the heartbeat duration minus the previous pause (looks better then twice half the beat duration)

repeat

(*) check the "scripting for dummies" post in this forum
Check the helpfiles for the visibility functions (shortcut list)