Can I prevent "NaN" from appearing in numerical entry?

Glad you found a work around.  However, wouldn't it work to set the numeric variable's default value to zero?

Brenda,

The default value (that is set when you create the variable) really just determines the initial value of the variable before any other action changes it.  It doesn't "restore" the variable to this value in any way after the value is changed, so the default value is only useful for setting initial conditions when the app first starts.

Doug

Idid some research and I found JS solution:

Here is link:

https://dl.dropboxusercontent.com/u/26178433/No%20NaN%20output/story.html

And story file:

https://db.tt/p21265XY

Another possible way to avoid nan is by using an execute JavaScript trigger after the setting the variable value:

This is the JavaScript code to run:

Thanks Lea for sharing the javascript code here with us! 

I'm having this issue now and it's two years down the track and 4 years from the start of this thread! Does the feature request function work? Seems crazy that this bug is still there after such a long time.

Hi Michelle, 

Thanks for coming to share your need for this change and feature within Storyline, and I'm sorry it's caused you difficulty as you build your courses. Our team does keep an eye on the ELH forums and that feature request form, and uses all that information when looking at ways to update Storyline. Each feature idea is tracked thru that form and as our team looks at creating them, they focus on how many customers are impacted, what other workarounds or solutions are available, and the overall impact on the product (if it's going to change anything else about the way it works). All that information is used to determine priority and it seems this set up hasn't risen to that highest level yet. I hope that offers a bit more insight into the process and please continue to keep us in the loop on what you'd like to see in Storyline or our other products! 

Hey Simon, I had the same problem and I tried to leave with a 0, this way, in a group it can calculate the sum of the fields.
I see that this conversation is from 5 years ago, so I hope you had solved XD, but if can be useful for other people I did this:

IF( NOT( {string} > 0) , 0 , {string})

Thanks Miquel! Never too late to pop in and assist as it could certainly help someone in the future :)

Welcome to E-Learning Heroes by the way ☺️

how to remove that NaN in age field