hello i need some help wiht a XML transformatios... i have the next XML..

<RTBS_TLS_OUT>
<SubscriberID>584120101939</SubscriberID>
<SPName>DIGITEL</SPName>
<TrafficRecord>
<UnitTypeName>SMS</UnitTypeName>
<StartCallDateTime>20080618144325</StartCallDateTime>
<EndCallDateTime>20080618144325</EndCallDateTime>
<UsageAmount>1</UsageAmount>
<ApplicationName>SMS</ApplicationName>
<SubTypeName>MOSC_MOV-DGTL_SMS</SubTypeName>
<StartCallDateTimeTypeName>NULL</StartCallDateTimeTypeName>
<EndCallDateTimeTypeName>NULL</EndCallDateTimeTypeName>
<DestinyNumber>584123698521</DestinyNumber>
<CallDuration>NULL</CallDuration>
<CallType>NULL</CallType>
<CellID>NULL</CellID>
<Cost>0.00</Cost>
<UsageCredit>Bono</UsageCredit>
<PersonalBalance>4.59</PersonalBalance>
<CurrencyBalance>6.59</CurrencyBalance>
<CurrencyUsage>0.00</CurrencyUsage>
<KbBalance>0</KbBalance>
<KbUsage>0.00</KbUsage>
<SECBalance>550</SECBalance>
<SECUsage>0</SECUsage>
<SMSBalance>993</SMSBalance>
<SMSUsage>1</SMSUsage>
<Balances>
<Balance>
<Balance>1</Balance>
<AccountExpiration>20320101000000</AccountExpiration>
<BalanceName>F_SMS</BalanceName>
<AvailableBalance>993</AvailableBalance>
<FundsType>BalanceOnly</FundsType>
</Balance>
</Balances>
</TrafficRecord>
</TrafficRecord>
<Operation_Message>
<Code> RTBS_TLS-OM0001</Code>
<Message>Operación ejecutada de forma exitosa</Message>
</Operation_Message>
</RTBS_TLS_OUT>


I need that for each TRAFFICRECORD get all the BALANCES related.... i did one for inside other like this...

<xsl:for-each select="//TrafficRecord">
<xsl:element name="PropertySet">
<xsl:attribute name="UnitTypeName"><xsl:value-of select="UnitTypeName"/></xsl:attribute>
<xsl:attribute name="StartCallDateTime"><xsl:value-of select="StartCallDateTime"/></xsl:attribute>
<xsl:attribute name="EndCallDateTime"><xsl:value-of select="EndCallDateTime"/></xsl:attribute>
<xsl:for-each select="//Balances/Balance">
<xsl:element name="PropertySet">
<xsl:attribute name="Balance"><xsl:value-of select="Balance"/></xsl:attribute>
<xsl:attribute name="AccountExpiration"><xsl:value-of select="AccountExpiration"/></xsl:attribute>
<xsl:attribute name="BalanceName"><xsl:value-of select="BalanceName"/></xsl:attribute>
</xsl:element>
</xsl:for-each>
</xsl:element>
</xsl:for-each>
</xsl:if>

The problem that i have is that i get all the balances for all tha TRAFFICRECORD.. i mean y cant get only the balances related with the traffic record....

thanks....