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If you want to change whether or not the control is required:

Write a business rule to make the field required.

Let's say a designer created a form from a schema that contained a non-required Text field - minOccurs = 0. The designer adds a Trigger control named tr1 and this simple rule to make the field required when the trigger control is clicked.

Here is the relevant section of the xsd:

Section

Column

Code Block

</xsd:element>
         <xsd:element minOccurs="0" name="OptionalText" type="xsd:string">
            <xsd:annotation>
               <xsd:appinfo>
                  <frevvo:displaytype>Text</frevvo:displaytype>
                  <frevvo:label>OptionalText</frevvo:label>
               </xsd:appinfo>
            </xsd:annotation>
         </xsd:element>

Column

Code Block
if(tr1.clicked){ Non_RequiredControl.required = true; }

Column

Edit the XSD and update it in the schema's tab for that application.

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