IDML Filter: provide the custom text variables translation capability

Let’s consider an example document UI.

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The designmap.xml document part contains the following custom text variable:

   <TextVariable Self="dTextVariablenVariable 1" Name="Variable 1" VariableType="CustomTextType">
        <CustomTextVariablePreference>
            <Properties>
                <Contents type="string">Custom text variable content</Contents>
            </Properties>
        </CustomTextVariablePreference>
    </TextVariable>

So, the contents tag characters should be conditionally taken into account for translation.

For more details please refer to the attached document.