Describe the bug
While co-modeling allows to create experiment inside the global of a different file, it doesn't allow it in another experiment for some reason, even though we can manipulate them.

To Reproduce
Steps to reproduce the behavior:

1. After creating a explorationBatches.gaml file containing an experiment called Simple Run this model:

model batchtests

import "../includes/explorationBatches.gaml" as exploration

global {

	init {
		create exploration.Simple;
	}	
	
}

experiment Batchtests type: gui {
	
	init {
		create exploration.Simple;
	}
}

2. See that the first create statement compiles, but not the second because "No instance of explorationbatches_model available for creating instances of Simple"
3. you can replace the second create by an ask statement and see that there is no problem interacting with the "Simple" experiments

Expected behavior
Being able to completely manipulate experiments inside another experiment, including creation