restriction in XSD schema for an XML line? -

i have line of code

<floatoutput id="2">myvalue</floatoutput> 

i want put restriction on "myvalue" should between -50 , 50. have tried many options don't know how use extension , restriction toghether. can answer please?

you need both extension (since have attribute id) , restriction (since have constraint on content of floatoutput). 1 approach know of create simple type constraint , extend type attribute. following.

<?xml version="1.0" encoding="utf-8"?> <xs:schema xmlns:xs="http://www.w3.org/2001/xmlschema" elementformdefault="qualified">   <xs:simpletype name="floatoutputtype">         <xs:restriction base="xs:integer">             <xs:mininclusive value="-50"/>             <xs:maxinclusive value="50"/>         </xs:restriction>     </xs:simpletype>    <xs:element name="floatoutput">       <xs:complextype>         <xs:simplecontent>           <xs:extension base="floatoutputtype">             <xs:attribute name="id" type="xs:byte" use="required"/>           </xs:extension>         </xs:simplecontent>       </xs:complextype>     </xs:element> </xs:schema>