Pass xml as parameter to a proc is returning null

Question

My xml may be wrong, of course. but since I’m not sure, I say: I need to pass a parameter via programming to a proc. As in my program is coming null, I decided to run directly manually first in pl/sql and still nothing came. The xml mounted by the system comes like this:

    [0]: {<sCodPrestadorTs>1366348</sCodPrestadorTs>
}
    [1]: {<sCodPrestadorTsSub>3850055</sCodPrestadorTsSub>
}
    [2]: {<sCodRede>801</sCodRede>
}
    [3]: {<sCodOperadora>1</sCodOperadora>
}
    [4]: {<sDataExclusao>07/01/2016</sDataExclusao>
}

To pass the hand, I did so:

<sCodPrestadorTs>1366348</sCodPrestadorTs>
<sCodPrestadorTsSub>3850055</sCodPrestadorTsSub>
<sCodRede>801</sCodRede>
<sCodOperadora>1</sCodOperadora>
<sDataExclusao>07/01/2016</sDataExclusao>

And so I pass the proc straight. The type passed to string, as seen in the image.

What is wrong with this approach? I used the c#tag, because the application where the parameter is passed is in c#(web Forms).

One of the errors is that there was no parent tag. I put and managed to run proc and return something. It was like this xml:

<parametros>
    <sCodPrestadorTs>1366348</sCodPrestadorTs>
    <sCodPrestadorTsSub>3850055</sCodPrestadorTsSub>
    <sCodRede>801</sCodRede>
    <sCodOperadora>1</sCodOperadora>
    <sDataExclusao>07/01/2016</sDataExclusao>
</parametros>