Glad we're on the right track. 
You'll want to use the "self_paced" property. If you set this property as true, the display of tokens will be triggered by the user.
If you set the "mode" property as "plain" it will display the tokens in sequence. This way, the first token will be fixed and each subsequent token will be revealed when the participants progress via the spacebar. (See here: https://help.findingfive.com/api/stimuli...ight=plain)
You'll want to use the "self_paced" property. If you set this property as true, the display of tokens will be triggered by the user.
If you set the "mode" property as "plain" it will display the tokens in sequence. This way, the first token will be fixed and each subsequent token will be revealed when the participants progress via the spacebar. (See here: https://help.findingfive.com/api/stimuli...ight=plain)