HYSPLIT 不能设置模拟粒子数

aspen

按照 Advanced-》Configuration Setup-》Concentration-》Set Partical/Puff Release number limit  
报错  Error  Can't Read ‘numpar’，no such variable.  
can't read "numpar": no such variable
can't read "numpar": no such variable
    while executing
"set np0 $numpar"
    (procedure "parnum" line 10)
    invoked from within
"parnum"
    invoked from within
".configinit.pnum.but invoke"
    ("uplevel" body line 1)
    invoked from within
"uplevel #0 [list $w invoke]"
    (procedure "tk::ButtonUp" line 24)
    invoked from within
"tk::ButtonUp .configinit.pnum.but"
    (command bound to event)


有没有也有这种情况。  
谢谢