XML : Need to make bold for attribute values in pdf (dita to pdf)

I want to show the different between attribute value and the corresponding element value. so i just need to make the bold for attribute value in dita to pdf using oxygen. I tried xsl for that but its not working:

My Input dita xml file is:

  <data-about>              <data type="data.module.code">HSXWB-A-79-11-11-00A01-000A-D</data>              <data type="classification">01</data>              <data type="responsible.partner.company">F0302</data>              <data type="originator">F0302</data>              <data type="applicability">ALL</data>              <data type="data.module.reference.code">TRENTXWB-A-00-00-00-01A01-022A-D</data>              <data type="quality.assurance">tabtop</data>              <data type="skill.level">sk01</data>              <data type="reason.for.update">First Release</data>              <data type="publication.code">UNKNOWN PUBLICATION</data>           </data-about>    

My xsl(2.0) used as:

      <xsl:template match="/">          <xsl:apply-templates select="//data-about"/>     </xsl:template>        <xsl:template match="data-about/*">          <xsl:value-of select="concat(@type, ' : ', current())"/>      </xsl:template>    

Now i'm presently getting output as

data.module.code : HSXWB-A-79-11-11-00A01-000A-D

classification : 01

responsible.partner.company : F0302 .

.

.

I want the pdf output as

data.module.code : HSXWB-A-79-11-11-00A01-000A-D

classification : 01

responsible.partner.company : F0302

.

.

.

Please guide on this. Thanks in advance