This is a conditional Talaq. Talaq will take place if the condition was fulfilled, otherwise not. It means that the wife will be divorced with one revocable Talaq if the condition you declared as the condition of Talaq was fulfilled. If she does not do so, the Talaq will not take place. It is upon you what you mean by ?agar tum ne aisa kiya?.
Allah (Subhana Wa Ta’ala) knows Best
Darul Uloom Deoband