Is it permissible to change the intention of donating money from Gaza to a specific person's serious medical condition?

As long as the charity is in the possession of its owner and the recipient has not taken possession of it, the owner may dispose of it as they wish. The question then remains regarding what is most virtuous, and the rule is that charity is better the greater the benefit derived from it and the more pressing the need for it. Those in need from Gaza are more deserving at this time because their situation is more severe, and they lack the means to satisfy their needs.