Hi @Harrj148 ,
Could you tell me what graph do you want to create?
If you do not create connection with data source, you could also use variable or collection in PowerApps as datasource.
What's more, you could also enter data in the control's property to set its data source.
For example, I insert a Column chart.
Set the Column chart's Items:
Table({id:1,number:10},{id:2,number:20},{id:3,number:30})
Then the chart can display the data that you entered, not from outside datasource.
Best regards,
Community Support Team _ Phoebe Liu