if statement problem:

[delliston]

OK, I thought I could use the "if" statement to say the following: (if userdimscale 15.0 (setvar dimscale 6.0)), in english, if userdimscale equals 15.0 then set dimscale to 6.0. so, what's wrong with that it doesn't work?

[dgorsman · Accepted solution]

I'm not seeing a comparison operation in there...

(if ...) takes one comparison expression, one "if true" expression, and one "if false" expression:

(if (= 15.0 some_number)
   (foo_true)
   (foo_false)
)

[delliston · Accepted solution]

OOPS, forgot the = sign

Thanks

[Kent1Cooper]

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@Anonymous wrote:
OOPS, forgot the = sign

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... as well as the parentheses enclosing the (=) function, and either an apostrophe ' preceding, or two double-quotes " surrounding, the System Variable name.  [I assume you also got those corrected, but just for the sake of anyone else looking around....]

(if (= userdimscale 15.0) (setvar 'dimscale 6.0))