Saving in the database appears with double quotation marks around the values

Greetings, the data I save is recorded with double quotation marks as you can see in the image. How can I solve this? Thank you.

data y blocks images

Captura de pantalla 2023-05-16 110312


This is how data is stored in firebase, its normal.

When you call data then you will not see those quotation marks.

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