I've added a Multiline Text Area to a form. If I preview the form it works fine.
However if I edit the 'Min/Initial number of rows' to any value, when I try to preview I get the above error.
Even if I revert the value to the original (which is 5) the error still occurs.
I'm trying to set the initial number of lines to 2, and allow adding extra lines.
Any ideas about how to overcome this issue.
I checked under v18.05.0, and I can replicate the problem you're having if I manually type a value into the "Min/Initial Number of Rows" property.
I also found that if I only use the incrementer/decrementer controls on that property (the small up/down arrow control that appears on the right side of the field) that I can still preview the form.
Please retry your form - delete the Multiline Text Area you already have, and re-add the field; then change the Min/Initial value just using the mouse to click the up/down selector.
Reply here if the workaround doesn't work. I'll be opening a bug report for this as well.
thanks for the information.
The first time I tried your solution it didn't work, but I tried again and it seems to be working now.
I'll accept the answer above.