Output result of xsl:value-of in an xml attribute

I have an XML input file and I'm trying to output the result of a call like:

<xsl:value-of select="Some/Value"/>

into an attribute.

<Output Attribute="Value should be put here"/>

My problem is since I'm outputing XML the xsl processor won't allow me to write:

<Output Attribute="<xsl:value-of select="Some/Value"/>">

How do you accomplish this?

From stackoverflow

• You need to use an xsl:attribute element:

  <Output>
    <xsl:attribute name="Attribute">
      <xsl:value-of select="Some/Value"/>
    </xsl:attribute>
  </Output>
  

• The easiest way is to use attribute value templates, like this:

  <Output Attribute="{Some/Value}"/>