Hi devs,
sorry if I ask a basic question but I need a hint from you to move forward.

I am trying to implement a multi form to let the user to select multiple
products and add them into a category. I have the multi form but now when I
select one or more products and submit I get the error:

Errore:
Il seguente parametro richiesto �B mancante: [IN]
[safeAddProductToCategory.fromDate]
Il seguente parametro richiesto �B mancante: [IN]
[safeAddProductToCategory.productCategoryId]
Il seguente parametro richiesto �B mancante: [IN]
[safeAddProductToCategory.productId]

(missing parameters)

The form is this:

-----------------------------------------

    <form name="ListProduct" list-name="listIt"
target="addProductToCategory" title="" type="multi"
paginate-target="FindProduct"
        odd-row-style="alternate-row" header-row-style="header-row"
default-table-style="basic-table hover-bar">
        <actions>
            <service service-name="performFind" result-map-name="result"
result-map-list-name="listIt">
                <field-map field-name="inputFields" env-name="parameters"/>
                <field-map field-name="entityName" value="Product"/>
                <field-map field-name="orderBy" value="productId"/>
            </service>
        </actions>

        <field name="_rowSubmit"
title="${uiLabelMap.CommonSelect}"><check/></field>
        <field name="productId" widget-style="buttontext">
            <hyperlink also-hidden="false" description="${productId}"
target="EditProduct?productId=${productId}"/>
        </field>
        <field name="primaryProductCategoryId"><display/></field>
        <field name="internalName"><display/></field>

        <field name="submitButton" title="${uiLabelMap.CommonSubmit}"
widget-style="smallSubmit">
          <submit/>
        </field>
        <on-event-update-area event-type="paginate" area-id="search-results"
area-target="FindProductSearchResults"/>
    </form>

-----------------------------------------
 Can you please indicate where am I wrong ?
Where/How should I set the requested fields?
So many thanks!
-Bruno

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