This article explains why an open text box might be displayed as numerical instead of a string in certain situations.

Information

You probably have a type check set on your open text box. The “integer” type check changes the variable from string to numerical.

FAQ

Why is my open text box showing as numerical instead of a string?

This is likely because there is an "integer" type check set on your open text box. This type check changes the variable from a string to a numerical value, causing it to be displayed and treated as a number rather than text.