I use mapinfo 4.1 and mapbasic 4.0  on win98
 
When I write the falloving statements in mapbasic window.
 
"

dim a as object

create object as union from selection into variable a

set map clipping object a

"

Everything is okay. I can rerun the second and third statements.

but in mapbasic, at the first time its okay but when I rerun the sub. clipping are doesn't appear.

Any Idea?

 

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