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===Usage===
===Parameters===* :'''Ref ''' – ID number of the arrow object;* :'''Barnumber ''' – the new bar number that is to be assigned to the specified object.
===Example===
no edit summary
Arw_SetBarNumber returns a value of 0 if the barnumber was successfully assigned, and a value of -2 if the specified object ID number is invalid.
<syntaxhighlight>
arw_setbarnumber(ref, barnumber);
</syntaxhighlight>
Assign the new barnumber value of 100 to the arrow object with ID = 1;
<syntaxhighlight>
