I need to place objects on coordinates indicated in a separate file. I also need to record text and numbers to the variables of objects from the file.
Should I use XML files and plugin? Any tips, tuts or capx?
XML sounds like the way to go.
https://www.scirra.com/tutorials/search?q=xml
Parse it into an array, and you'll have all the information available to you for use.
Although you can't dynamically create object types at runtime, you'll have to set those up ahead of time.
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What platform are you developing for? If you're doing mobile then xml is probably best... if you're using nwjs then using a dictionary saved as json works well.
~Sol