if you see below example compare that with your xml file in that you missed <var-jstype>
inside <var>
Please try this.
<field property="id" depends="intRange">
<arg key="id" resource="false" />
<arg key="${var:min}" resource="false" />
<arg key="${var:max}" resource="false" />
<var>
<var-name>min</var-name>
<var-value>10</var-value>
<var-jstype></var-jstype>
</var>
</field>