Hi all,

I am doing programming based on others' work. Many times, after I inserted
some code, I got runtime error 1004 and there are many reasons explaining it
such as can not use a method of a object (e.g. range). THese problem
statements are innocent before. Sometime, I change the inserted code position
or change some states like who is active sheet and errors gone. My question
what is the real reason and how can I prevent it or make capsule for my code?

Clara
thank you so much for your help