Zoho Books says "Illegal value specified for a Dropdown field: ["..."]" Forms to Books using Flow

Zoho Books says "Illegal value specified for a Dropdown field: ["..."]" Forms to Books using Flow

Hello,

I have a problem with my Zoho Books using Flow.
I am basically using Zoho Flow to link my Zoho Forms with my Zoho Books. 

I want to Create a new item in my Zoho Books from the info I typed in Zoho Forms.
I used this tool in the image below:

My problem is simple: Everything I link work except for my drop down menus. All of them arn't working and the error is Zoho Books says "Illegal value specified for a Dropdown field: ["..."]"
I can not use a personal value and then use a trigger because the information isn't good.

How can I resolve that? I though about doing a script but I don't know how to do it.

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