Can you please check this script

[Ragnar Lothbrok 21]

Can anyone please check this script what's the problem, my client crash when clicking 2 times
 
this is a Platinum Skill NPC script..
 

 

 

skill 142,1,0;
switch(BaseClass) {
  case 0: if (Class !=23) skill 143,1,0; break;
  case 1: skill 144,1,0; skill 145,1,0; skill 146,1,0; break;
  case 2: skill 157,1,0; break;
  case 3: skill 147,1,0; skill 148,1,0; break;
  case 4: skill 156,1,0; break;
  case 5: skill 153,1,0; skill 154,1,0; skill 155,1,0; break;
  case 6: skill 149,1,0; skill 150,1,0; skill 151,1,0; skill 152,1,0; break;
  default: break;
}
switch(BaseJob) {
  case 7: skill 1001,1,0; break;
  case 8: skill 1014,1,0; break;
  case 9: skill 1006,1,0; break;
  case 10: skill 1012,1,0; skill 1013,1,0; break;
  case 11: skill 1009,1,0; break;
  case 12: skill 1003,1,0; skill 1004,1,0; break;
  case 14: skill 1002,1,0; break;
  case 15: skill 1015,1,0; skill 1016,1,0; break;
  case 16: skill 1007,1,0; skill 1008,1,0; skill 1017,1,0; skill 1018,1,0; skill 1019,1,0; break;
  case 17: skill 1005,1,0; break;
  case 18: skill 238,1,0; break;
  case 19: skill 1010,1,0; break;
  case 20: skill 1011,1,0; break;
  default: break;
}
if (  ! @skilled ) {
specialeffect2 EF_HIT5;
message strcharinfo(0),"You have recieve your Platinum Skill.";
set @skilled, 1;
set @time, 5;
while ( @time ) {
  sleep2 1000 ;
  set @time, @time - 1;
}
set @skilled, 0;
  }
  else {
dispbottom "You have Platinum Skill.. Don't spam please! :< Wait "+ @time +" second"+ ( ( @t > 1 ) ? "s" : "" );
  }
}

Edited March 21, 2014 by P r o p e r t i e s

[evilpuncker 504]

set @time, @time - 0;

 

??? why this sh*t? xD