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  1. 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
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    Code Block
    </xsd:element>
             <xsd:element minOccurs="0" name="NonRequiredControl" type="xsd:string">
                <xsd:annotation>
                   <xsd:appinfo>
                      <frevvo:displaytype>Text</frevvo:displaytype>
                      <frevvo:label>Non Required Control</frevvo:label>
                   </xsd:appinfo>
                </xsd:annotation>
             </xsd:element>
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    if(tr1.clicked){
    NonRequiredControl.required = true;
    }

    Same Rule as above built with the Visual Rule Builder

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

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