trying to delete primitives by 'Attribute_Wrangle'

[Valent]

Hi, I'm trying to delete primitives by 'Attribute_Wrangle' based on their attribute value, and the result is not the one I expect, what am I doing wrong?

int a;
for(a=0; a<@primnum; a++)
{
  if(@c1<0.3) removeprim(1,a,1);
} 
in my opinion, this should delete every primitive in the mesh whose value of attribute "c1" is less than 0.3. Instead, it deletes some random primitives (well not random but unrelated ones)

p.s: I know that I can do it easily by 'Blast'-node) 

[Valent]

stoopid me

if(@c1<0.3)
{
    removeprim(0, @primnum, 1);    
}