I just wanted to mention that I did that on purpose because otherwise, there is no IOB at all. I considered the amount of active insulin as more important than the remaining units in the reservoir. I mentioned that in the Readme. It is up to you to change it, but you would need to update the Readme too

Ah, so it would maybe better to create an extra sensor to represent the reservoirRemainingUnits amount.

In the HA integration we do have that sensor, but in nightscout I only figured out how to set the values for existing plug-ins like the pump plug-in I used. Unfortunately, there were only limited parameters to set and no dedicated IOB field. Therefore, I reused the remaining amount in the reservoir field

In the HA integration we do have that sensor, but in nightscout I only figured out how to set the values for existing plug-ins like the pump plug-in I used. Unfortunately, there were only limited parameters to set and no dedicated IOB field. Therefore, I reused the remaining amount in the reservoir field

the issue with using IOB as the remaining insulin is that an alarm state is created within NS showing low insulin.. if profiles are setup within NS then there is an IOB pill which is fairly accurate

also as far as im aware IOB can be set via the api

Data to send:
"type": "iob": Specify the data type as "iob" to indicate it's an IOB value.
"value": "your_iob_value": Enter the calculated IOB value.
"created_at": "timestamp": Include a timestamp for when the IOB was calculated.

curl -H "Content-Type: application/json" -X POST -d '{"type": "iob", "value": "1.2", "created_at": "2023-08-24T10:00:00Z"}' "https://yournightscoutsite.herokuapp.com/api/v1/treatments" -u "your_api_secret"

I will check it again as soon as I have some time

In the HA integration we do have that sensor, but in nightscout I only figured out how to set the values for existing plug-ins like the pump plug-in I used. Unfortunately, there were only limited parameters to set and no dedicated IOB field. Therefore, I reused the remaining amount in the reservoir field

the issue with using IOB as the remaining insulin is that an alarm state is created within NS showing low insulin.. if profiles are setup within NS then there is an IOB pill which is fairly accurate

also as far as im aware IOB can be set via the api

Data to send: "type": "iob": Specify the data type as "iob" to indicate it's an IOB value. "value": "your_iob_value": Enter the calculated IOB value. "created_at": "timestamp": Include a timestamp for when the IOB was calculated.

curl -H "Content-Type: application/json" -X POST -d '{"type": "iob", "value": "1.2", "created_at": "2023-08-24T10:00:00Z"}' "https://yournightscoutsite.herokuapp.com/api/v1/treatments" -u "your_api_secret"

I checked again, and it appears that your statement is not correct. The IOB value in Nightscout is comming from the treatment portal and is claculated by the information of all treatments. Check the API at YOUR_NS_URL/api-docs/ on your own NS server. You will find the API for treatments, with no option to set an overall IOB value. Treatments are only those notes within the graph which have information about carbs and insulin.
I do understand your point that you might have problems, having the IOB value reported as the reservoir amount, but you can update the code yourself in your checked out files and just give HA a restart.
Personally, I don't like the calculated IOB value in xdrip or NS and I would rather have the pump IOB than the reservoir amount.
But if people in general prefer it the other way around, it can be changed globally. I would just modify it again in my own instance - no problem.

If you think you have found a way to set the overall IOB value, try it yourself and report back. I would be happy if it is possible, but it didn't work for me (it just created a note in the graph, without information - just the time).