Crystal Report continuous if statement? -

i have 12 check boxes in database , want crystal report @ each one.

• if first 1 true want return word,
• if it's false return nothing.

ideally, want show ones true listed side side.

example: if 1, 3, , 5 true show name of field dodge, chevy, nissan.

my statement have

//01 ( if {make.logical_1} = true 'dodge' else'' ); //02 if {make.logical_2} = true 'chevy' else'' ); //03 ( if {make.logical_3} = true 'nissan' else'' ); 

there no errors returns last if statement, not 1st , 3rd if 1st true well. can leave out else'' same wrong results

it should show dodge nissan
please help!!

i think need use this:

trim((if {make.logical_1} = true 'dodge ' else '')     & (if {make.logical_2} = true 'chevy ' else '')    & (if {make.logical_3} = true 'nissan ' else ''));