aggregate

[Bhavya Sharma]

Hi

i want to use generator in aggretate , is it possible to use that or not,
can you just take a look at following entry and reply me what is wrong with this.
whenever i try to run this, it shows me src attribute is neccessery,
Please reply ASAP

Thank you

<map:aggregate element="cmsbody">

    <map:part src=""
    <map:part src="">    <map:part src=""
    <map:part src="">    <map:part src="" <!-- generator name -->
        <map:parameter name="a" value="{a}"/>
        <map:parameter name="b" value="{b}"/>
        <map:parameter name="c" value="{d}"/>
    </map:part>
</map:aggregate>

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Thank you,
Bhavya Sharma