Blessed with children

A rabbi meets a couple and asks them how many children they have.
“Sadly we are not blessed with any children yet.”
“Let me write down your names and place a note in the Kotel for a blessing.”
Five years later he meets the women again and asks,
“So how is the family?”
“Well rabbi, we were blessed with 10 children; two sets of twins and two sets of triplets.”
“Amazing! I would like to congratulate your husband. Where is he?”
“He is in Israel.” She replies
“What is he doing there?”
“Trying to find that note you placed in the wall.”