You can try to add

CLEAR PROGRAM
CLEAR CLASS ...

In order to provide alternative you have to give more info on why you need to create a class on fly

>I don't know why but I'm trying to define a class on the fly.
>To do that I put the code on in a string, transform this string in a file.prg than compile it and add it to my procedures
>
>

>lcString = myDefineCode
>=strtofile(lcstring,MyFlyProc,0)
>lcMemSet = set('procedures')
>compile MyFlyProc
>set procedure to MyFlyProc additive
>
>* excute my code which refers to defined object
>release procedure MyflyProc
>set procedure to (lcMemSet)
>*
>erase MyflyProc
>
>

>
>Well I cannot erase that file as it tells me that outstanding references exist. How can I kill those references
>
>Thank you
>Alessio
>
>By the way, if there are better methods to do that...fell free to suggest them to me :)