Changing the value of a vector that is inside a loop

Hello, how are you.
Sorry for sending the message directly because you replied to a similar subject.
In this item it is possible to visualize the value of a vector.
https://www.chronoengine.com/forums/posts/t109043/how-to-put-related-model-array-in-column?keywords=read%20array
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In my situation I'm interested in changing the value of a vector that is inside a loop.
I can make it enter the loop and get the value, but it only returns the last of the search.
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In the selected Values field I use the code
{var:read_viagem_cliente.0.model_viagem_cliente.fk_cliente}
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I've tried to use it like this, but it gave an error.
{var:read_viagem_cliente.$(var:area_repeater_viagem_cliente_itens.key).model_viagem_cliente.fk_cliente}
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Do you have any suggestions?
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Img1 - http://laurenceaa.online/img/Img1.png
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Img2 - http://laurenceaa.online/img/Img2.png
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Img3 - http://laurenceaa.online/img/Img3.png