Return meta_value ACF Date field

Hi,

Can you help me to return for an ACF data field the mate_value insteadd of the return format given in the ACF field settings. Do you have an export custom field php snippet for me to figure this out? For example it returns now for the export:

<Repeater_Programma>

    <Repeater_Startdatum>

        <![CDATA[ 17 maart 2026 ]]>

     </Repeater_Startdatum>

But I want (or similar):

<Repeater_Programma>

    <Repeater_Startdatum>

        <![CDATA[ 20260317 ]]>

     </Repeater_Startdatum>

The reason is that is not being imported correctly.

With thanks,

Demian