Fixed the bug in crypto/dd/oi

[colin99d]

Description

Looks like the parser stuff doesn't like integers too much, so I switched it to strings. Fixes #2580

How has this been tested?

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• Make sure affected commands still run in terminal
• Ensure the api still works (Test only affects controller, even though INTERVALS was in models)
• Check any related reports (Test only affects controller, even though INTERVALS was in models)

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