Find a variable length string between two strings

HI Experts,

I have a requirement where i have to fetch a sub-string of variable length between two substring in a string.

I have a string like this:

<MOABETR>amount</MOABETR>.

i need to fetch value of amount and length of amount can vary. Is there any way to do that?

IF i search for occurrence of <MOABETR> and get the offset and i add the length of it to that offset and start fetching value from there, i wouldn't be sure; how many characters to fetch because length of amount varies.

Thanks,

Dheeraj