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Ordinary Text Box can hold the String, and that allows all the symbols to be entered, and there’s no way to limit the input. You could try to use the Masked Textbox widget, it’s also an embedded widget in the composer, and it limits the length and the input can only be Number and English Characters. Here’s how to use the widget, https://support.ptc.com/appserver/cs/view/solution.jsp?n=CS249516&posno=1&q=masked%20textbox... , please reply to ensure it’s what you want.
