>You can ran into a slight problem if using type() if the parameter is a form property. For example, run any form and type in the command window:

Some interesting things:

oX = NEWOBJECT('form')
?TYPE("oX.top[0]")
?TYPE("oX.top[1]")

DIMENSION xx[1]
?TYPE("xx[0]")
?TYPE("xx[1]")

oX.AddProperty('aA[1]')
?TYPE("oX.aA[0]")
?TYPE("oX.aA[1]")

So, to test if a variable or property is an array:

llArray = TYPE("array[0]") = 'U' AND TYPE("array[1]") <> 'U'