Multi-state Object Initial index value issue

[javj9008]

I have a issue with this dslink, when create a new Multistate object is discovered from a Bacnet device (either from IP or MSTP), the index that is co-related to the string array of status-texts property starts from zero.
For example:
Status texts={Auto, Cool, Heat, Fan, Array}
Present_value=0 means Auto
Present_value=1 means Cool
and soon on
I would like that the index por present value would initiate from 1 (one) value, for the previous example:
Status texts={Auto, Cool, Heat, Fan, Array}
Present_value=1 means Auto
Present_value=2 means Cool
and soon on
We need this behaviour for some special Bacnet devices whe are using with the bacnet-dslink and all their Multi-state values start from 1 index for present value
Where can it be edited on the source code of the dslink?

It will be great if someone can help me.

Kind regards.

Julian