We are all volunteers here with a very limited amount of time to answer questions on this forum. Unfortunately, when the person asking appears to show little understanding or concern about this by posting vague requests for help lacking details and not showing any indication that they have tried to do anything themselves, this is going to be the response.
We don’t have the time to do it for you if you don’t have the time to do anything for yourself. Now you may have spent hours or days on this and tried dozens of things but we have no way to know that because you didn’t tell us.
So all you are going to get are links to examples at best and requests for more details.
The exec 1 binding has been deprecated and replaced for about four years now. These concerns were taken into consideration way back when OH 2.0 was first being worked on and it’s why the 1.x version bindings remained supported in OH 2.0 through it’s entire lifetime. But at some point the old isn’t supportable any more and in OH 3 support for 1.x bindings were dropped, with the fallback of continuing to run an OH 2.x instance and using the Remote openHAB binding in an OH 3 to interact with those Items.
In short, I’m sorry you are having trouble with this but a lot of thought and effort has gone into this concern and to state otherwise is simply unfair.
Maybe show one of those attempts? Maybe tell us what specifically is failing? Show us some logs? When you take the car into the mechanics you don’t say “car no go, fix it”. You have to give them details. Without those details all we can provide are links to examples like rossko57 provided because we don’t know what else to do.
Because we don’t know what you don’t understand. We don’t know what specifically is failing. We don’t know how you are going about configuring the binding. We don’t know what you are seeing. Maybe it’s a syntax error. Maybe you’ve a permissions problem. Maybe you have a misunderstanding on what the Channels are used for.
We are now 7 posts in and no closer to having nearly enough information to help you. We are not going to do it all for you. But if you give us some details we can usually home in immediately on the root of the problem and straighten it out. Demanding us to just do it for you shows a profound lack of respect for the time of the people on this forum who are ready and willing to help.
“Car not go, fix it.”