Hello,
When I call com.aspose.pdf.TextBoxField.setValue() I get the exception.
Please throw a public exception with good wording.
Also it would be helpful to see here a maximum length allowed for this field.
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com.aspose.pdf.internal.p234.z11: startIndex + length cannot exceed length of string.
Parameter name: length
at com.aspose.pdf.internal.p234.z135.m2(Unknown Source) ~[aspose-pdf-9.5.2.jar:9.5.2]
at com.aspose.pdf.TextBoxField.m1(Unknown Source) ~[aspose-pdf-9.5.2.jar:9.5.2]
at com.aspose.pdf.TextBoxField.m2(Unknown Source) ~[aspose-pdf-9.5.2.jar:9.5.2]
at com.aspose.pdf.WidgetAnnotation.m1(Unknown Source) ~[aspose-pdf-9.5.2.jar:9.5.2]
at com.aspose.pdf.Field.updateAppearances(Unknown Source) ~[aspose-pdf-9.5.2.jar:9.5.2]
at com.aspose.pdf.Field.m6(Unknown Source) ~[aspose-pdf-9.5.2.jar:9.5.2]
at com.aspose.pdf.Field.setValue(Unknown Source) ~[aspose-pdf-9.5.2.jar:9.5.2]
at com.aspose.pdf.TextBoxField.setValue(Unknown Source) ~[aspose-pdf-9.5.2.jar:9.5.2]
Best regards, Evgeniy