Find MAX in Column Range ignoring Error values using Evaluate Syntax

I have defined a range called Rng. The Columns(2) of Rng contains numbers and #N/A error values. I want to find the MAX value in this column and then compare if it is >0.

Col A    Col B
--------------
ansdlsd  1
sdlsds   1
lgdfkf   2
fdlksd   2
sdlsdks  3
sds sds  5
sdlkjq   #N/A
eowmf    #N/A
pwpwo    #N/A
qwdds    #N/A
ospw     #N/A
dlsls    #N/A
qpdmf    #N/A

I tried using the shorthand syntax for Application.Evaluate i.e. [], but the code returns a Type Mismatch Error 13 - (Error 2029 in Watch Window).

If [MAX(IF(NOT(ISNA(Rng.Columns(2))),Rng.Columns(2)))] > 0 Then
    do something...
End If

I also tried :

If Application.Aggregate(4, 6, Rng.Columns(2), 1) > 0 Then...

got error : Error 2015 : Variant/Error.

I am able to get the MAX using the Excel Array Formula (Ctrl+Shft+Entr) in a worksheet:

{=MAX(IF(NOT(ISNA(B2:B14)),B2:B14))}

I suppose it has to do with the Rng.Columns(2) not being evaluated correctly by the [] brackets.

Or is something else the cause of this error?