Dynamic text formatting decimals

Hi,
anyone knows if it's possible to format dynamic text on data driven pages to only have a certain number of decimals.
For instance instead of showing 3,699881 it should be 3,7. The fields are formatted in the attribute table to have 1 decimal. However in the layout view all the decimals are still presence.

<dyn type="page" property="attribute" field="FieldName" domainlookup="true"/>

Is there maybe a format tag that can be included in the <dyn> tag?