PI mapping remove node

Hello,

I have a mapping file to file, and I want to exclude some lines in target file :

Here si my inbound description :

<ns:MT_FILE_INBOUND>

    <DATA>

        <key>300</key>

        <ident>50</ident>

        <F2>M140910000140900108   9912320140922SUPP    Toulon                        QU001AR      050  0000020140922</F2>

    </DATA>

    <DATA>

        <key>300</key>

        <ident>60</ident>

        <F2>M14091000000011 10188510 00000008</F2>

    </DATA>

    <DATA>

        <key>300</key>

        <ident>60</ident>

        <F2>M14091000000011 10188520 00000005</F2>

    </DATA>

    <DATA>

        <key>300</key>

        <ident>60</ident>

        <F2>M14091000000011 10191740 00000005</F2>

    </DATA>

</ns:MT_FILE_TALEND>

I only want in my target file lines with ident = 60 (and not ident = 50)

How can i exclude lines with ident = 50 ?

Thanks.