Add-on vehicle problems

Hello everyone. I recently have come into a problem with my files. Whenever I add a add-on vehicle that has the files “carcols” it does not seem to want to add the modifications to the vehicles but it spawns the vehicle. Am I doing something wrong?

resource_manifest_version '77731fab-63ca-442c-a67b-abc70f28dfa5'

files {
	'data/carvariations.meta',
	'data/dlctext.meta',
	'data/handling.meta',
	'data/vehicles.meta',
	'data/carcontentunlocks.meta',
	'data/carcols.meta',
}

data_file 'VEHICLE_VARIATION_FILE' 'data/carvariations.meta'
data_file 'DLCTEXT_FILE' 'data/dlctext.meta'
data_file 'HANDLING_FILE' 'data/handling.meta'
data_file 'VEHICLE_METADATA_FILE' 'data/vehicles.meta'
data_file 'CARCONTENTUNLOCKS_FILE' 'data/carcontentunlocks.meta'
data_file 'CARCOLS_FILE' 'data/carcols.meta'

client_scripts 'vehicle_names.lua'

Did you merge them? also this is the one i use.
Make sure to remove the files from the data folder and add them near the stream file.

resource_manifest_version '77731fab-63ca-442c-a67b-abc70f28dfa5'
 
files {
    'vehicles.meta',
    'carvariations.meta',
    'carcols.meta',
    'handling.meta',
}

data_file 'HANDLING_FILE' 'handling.meta'
data_file 'VEHICLE_METADATA_FILE' 'vehicles.meta'
data_file 'CARCOLS_FILE' 'carcols.meta'
data_file 'VEHICLE_VARIATION_FILE' 'carvariations.meta'


client_script {
    'vehicle_names.lua'    -- Not Required
}