Unlimited Alt Text in Storyline

I watched the recording of the webinar from Nov 20th on what's new in Articulate 360 and it sounded like there might be a hard limit on the maximum number of characters in the alt text for Storyline. The suggested limit is great and usually I remain within that limit, but sometimes I need to go over because I am describing complicated graphs or other math visualizations. I'm currently outlining some future resources for undergraduate and graduate math students and need to make sure whatever I make is accessible. I like that the character limit appears while I'm writing alt text, and it usually helps me tailor the alt text, but changing it so that the alt text can always only be a maximum of 150 characters could really impact if I decide to use Storyline for some of my work going forward.