Set Line price using xml document import

[anrodse]

Trying to import documents I cannot import line prices properly. This is the XML I'm importing:

<BOM>
  <BO>
    <AdmInfo>
      <Object>17</Object>
      <Version>2</Version>
    </AdmInfo>
    <Documents>
      <row>
        <CardCode>C065002</CardCode>
        <NumAtCard>1234-XML</NumAtCard>
        <DocTotal>41.90</DocTotal>
        <PaymentMethod>TR (C)</PaymentMethod>
        <SalesPersonCode>3</SalesPersonCode>
        <DocDate>20200629</DocDate>
        <DocDueDate>20200203</DocDueDate>
        <TaxDate>20200202</TaxDate>
      </row>
    </Documents>
    <Document_Lines>
      <row>
        <ItemCode>PRODUCT-REF</ItemCode>
        <ItemDescription>PRODUCT NAME</ItemDescription>
        <Quantity>5</Quantity>
        <UnitPrice>10.0</UnitPrice>
        <!-- <Price>10.0</Price> -->
        <!-- <PriceAfterVAT>12.1</PriceAfterVAT> -->
        <!-- <LineTotal>50.0</LineTotal> -->
      </row>
    </Document_Lines>
  </BO>
</BOM>

If I only use UnitPrice or PriceAfterVAT it works properly. My problem is that LineTotal or Price doesn't work. SAP ignores it. I'd like to use LineTotal but it seems to be impossible.

Can does fields be used? I only use one of them at a time.