Zabbix Not Accepting ExternalScript's Float Values

[jgp77]

I have a very simple php script, that is executed via a bash script, that returns a simple float variable letting me know how long a certain operation took. The values are in the form 0.33340 etc. Below are the errors I'm getting:

became not supported: Received value [0.3052] is not suitable for value type [Numeric (float)]
became not supported: Received value [0.4040] is not suitable for value type [Numeric (float)]
became not supported: Received value [0.4776] is not suitable for value type [Numeric (float)]
became not supported: Received value [0.4598] is not suitable for value type [Numeric (float)]
became not supported: Received value [0.5070] is not suitable for value type [Numeric (float)]
became not supported: Received value [0.4234] is not suitable for value type [Numeric (float)]

To output return values I'm using: print trim(substr($time, 0, -10));

This is a custom item using an external script. Stored: "as is" and Displayed "as is"

Any help is greatly appreciated as I'd like to start graphing these.