Hey!
I have also tried this and this is what happened so far:
My ex told me that he is going to Prague, so I wrote myself a text saying "Hi, I am here in Prague and it is very beautiful. I saw a cute present so I bought it for you. Hope you will like it. I took some photos, I will show you when I get home, but it would be better if we saw all this together. Take care!"
This was in the morning and he wrote to me on facebook later that night that he is in Prague and told me what he was doing.
After that he texted me when he got home saying everything went well and he got home. So I asked him if he took pictures and sent me a lot of pictures! And told me how his trip went.
So I guess it did work for me, we did not meet up though.
I wrote myself another text from him saying:" Hy! Do you want go out for a tea or hot chocolate? I miss you."
So I am waiting for this text but this was 3 days ago.
But I know he will send me this text and even get that gift from him.