@Mahandru, Nidhi Thanks for reaching out. As Create File action File Content accepts binary type therefore by default it will not show sting or any data type. In case if your file content is string then you can pass the string value too if it is not binary and you can click on See more on parameters/variable option so it will show all the list that is available, and you can select as per your need.
Let me know if you have any queries or concerns.
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