These is no provision to pass control parameters to a script but you can easily write your own Capi control if you want. The possible different parameters that you can send to a script are:
1) Alexa Text spoken
2) A parsed number if contained in the Alexa Text
3) Echo location (if in experimental mode)
4) User defined string
1) Alexa Text spoken
2) A parsed number if contained in the Alexa Text
3) Echo location (if in experimental mode)
4) User defined string
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