PDF Embed API - gotoLocation input error

[Jerrod326727148pse]

I get the following error when I use the gotoLocation UI Customization for the PDF Embed API:

1. code: "INVALID_INPUT"
2. message: "Only valid pageNumber, left and top is supported for command"

I don't get the error when I put in an integer for the pageNumber only, but whenever I populate the left and the top coordinates (which are optional parameters), I get the error. Please let me know what kind of variable type is expected, and please guide me to a detailed documentation if available. Thank you.