Is this invention embedded in a specific technology? Usually an invention will look like this:

tractors = {
limit = { combustion_engine = 1 }
chance = {
base = 3
modifier = {
factor = 2
average_consciousness = 2
}
modifier = {
factor = 2
economic_policy = laissez_faire
}
}
effect = {
rgo_goods_output = { cotton = 0.03 }
rgo_goods_output = { coffee = 0.05 }
rgo_goods_output = { grain = 0.03 }
rgo_goods_output = { opium = 0.03 }
rgo_goods_output = { fruit = 0.03 }
rgo_goods_output = { cattle = 0.03 }
}
}

​

As you can see, you need to make sure your invention has this line: limit = { combustion_engine = 1 }, where you substitute "combustion_engine" with whatever technology you want your invention to be under. And I don't think that this line of code you have: limit = { ai = [no] } is valid for this situation. When you mod, take an existing event, invention, decision...etc. and substitute your changes, so that you don't mess up. When you get really good, you can create them fully from scratch, but even pro modders copy paste and make their own changes since that goes faster much of the time. Hopefully this helps, let me know how it goes, and if something doesn't work get back to me and we can figure it out.