diff --git a/doc b/doc
new file mode 100755
index 00000000..aebeaecd
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diff --git a/lib/threefold/grid4/datamodelsimulator/loader.v b/lib/threefold/grid4/datamodelsimulator/loader.v
index 99613381..e013cd31 100644
--- a/lib/threefold/grid4/datamodelsimulator/loader.v
+++ b/lib/threefold/grid4/datamodelsimulator/loader.v
@@ -2,6 +2,8 @@ module datamodelsimulator
 
 import json
 import freeflowuniverse.herolib.core.pathlib
+import freeflowuniverse.herolib.threefold.grid4.datamodel { Node, NodeCapacity }
+
 
 // load the cloudboxes from a path
 pub fn load(path string) ![]Node {
diff --git a/lib/threefold/grid4/datamodelsimulator/model_aggregated.v b/lib/threefold/grid4/datamodelsimulator/model_aggregated.v
index dc9293b2..990b118e 100644
--- a/lib/threefold/grid4/datamodelsimulator/model_aggregated.v
+++ b/lib/threefold/grid4/datamodelsimulator/model_aggregated.v
@@ -1,5 +1,5 @@
 module datamodelsimulator
-
+import freeflowuniverse.herolib.threefold.grid4.datamodel { Node, NodeCapacity }
 import time
 
 // NodeTotalSim represents the aggregated data for a node simulation, including hardware specs, pricing, and location.
@@ -15,50 +15,50 @@ pub mut:
 	capacity         NodeCapacity // Aggregated hardware capacity
 }
 
-// total aggregates totals for a single NodeSim (e.g., storage, memory, price) from its slices and devices.
-pub fn (n NodeSim) total() !NodeTotalSim {
-	if n.computeslices.len == 0 && n.storageslices.len == 0 {
-		return error('Node has no slices to aggregate')
-	}
+// // total aggregates totals for a single NodeSim (e.g., storage, memory, price) from its slices and devices.
+// pub fn (n NodeTotalSim) total() !NodeTotalSim {
+// 	if n.computeslices.len == 0 && n.storageslices.len == 0 {
+// 		return error('Node has no slices to aggregate')
+// 	}
 
-	mut total := NodeTotalSim{
-		id:               n.id
-		cost:             n.cost
-		deliverytime:     time.now() // Placeholder; replace with actual logic if needed
-		inca_reward:      0  // Placeholder; compute from policy if available
-		reputation:       50 // Default; compute from uptime/history
-		uptime:           n.uptime
-		price_simulation: 0.0
-		capacity:         NodeCapacity{}
-	}
+// 	mut total := NodeTotalSim{
+// 		id:               n.id
+// 		cost:             n.cost
+// 		deliverytime:     time.now() // Placeholder; replace with actual logic if needed
+// 		inca_reward:      0  // Placeholder; compute from policy if available
+// 		reputation:       50 // Default; compute from uptime/history
+// 		uptime:           n.uptime
+// 		price_simulation: 0.0
+// 		capacity:         NodeCapacity{}
+// 	}
 
-	// Aggregate from compute slices
-	for slice in n.computeslices {
-		total.capacity.storage_gb += slice.storage_gb
-		total.capacity.mem_gb += slice.mem_gb
-		total.capacity.mem_gb_gpu += 0 // Add GPU logic if GPUs are in slices
-		total.capacity.passmark += slice.passmark
-		total.capacity.vcores += slice.vcores
-		total.price_simulation += slice.price_cc
-	}
+// 	// Aggregate from compute slices
+// 	for slice in n.computeslices {
+// 		total.capacity.storage_gb += slice.storage_gb
+// 		total.capacity.mem_gb += slice.mem_gb
+// 		total.capacity.mem_gb_gpu += 0 // Add GPU logic if GPUs are in slices
+// 		total.capacity.passmark += slice.passmark
+// 		total.capacity.vcores += slice.vcores
+// 		total.price_simulation += slice.price_cc
+// 	}
 
-	// Aggregate from storage slices (focus on storage/price)
-	for slice in n.storageslices {
-		total.capacity.storage_gb += 1.0 // Assuming 1GB per storage slice as per model_slices.v
-		total.price_simulation += slice.price_cc
-	}
+// 	// Aggregate from storage slices (focus on storage/price)
+// 	for slice in n.storageslices {
+// 		total.capacity.storage_gb += 1.0 // Assuming 1GB per storage slice as per model_slices.v
+// 		total.price_simulation += slice.price_cc
+// 	}
 
-	// Aggregate passmark/vcores from devices (e.g., CPUs)
-	for cpu in n.devices.cpu {
-		total.capacity.passmark += cpu.passmark
-		total.capacity.vcores += cpu.cores
-	}
+// 	// Aggregate passmark/vcores from devices (e.g., CPUs)
+// 	for cpu in n.devices.cpu {
+// 		total.capacity.passmark += cpu.passmark
+// 		total.capacity.vcores += cpu.cores
+// 	}
 
-	// Additional aggregations (e.g., from GPUs if present)
-	for gpu in n.devices.gpu {
-		total.capacity.mem_gb_gpu += gpu.memory_gb
-		total.capacity.vcores += gpu.cores // If GPUs contribute to vcores
-	}
+// 	// Additional aggregations (e.g., from GPUs if present)
+// 	for gpu in n.devices.gpu {
+// 		total.capacity.mem_gb_gpu += gpu.memory_gb
+// 		total.capacity.vcores += gpu.cores // If GPUs contribute to vcores
+// 	}
 
-	return total
-}
+// 	return total
+// }
diff --git a/lib/threefold/grid4/datamodelsimulator/play.v b/lib/threefold/grid4/datamodelsimulator/play.v
index 18677206..4e3cff53 100644
--- a/lib/threefold/grid4/datamodelsimulator/play.v
+++ b/lib/threefold/grid4/datamodelsimulator/play.v
@@ -1,5 +1,7 @@
 module datamodelsimulator
 
+import freeflowuniverse.herolib.threefold.grid4.datamodel { Node }
+
 import freeflowuniverse.herolib.core.playbook { PlayBook }
 
 // this play script should never be called from hero directly its called by gridsimulator
@@ -8,7 +10,7 @@ pub fn play(mut plbook PlayBook) !map[string]&Node {
 
 	mut nodesdict := map[string]&Node{}
 	for action in actions2 {
-		echo('TODO: Implement action handling for ${action.name}')
+		return error ('TODO: Implement action handling for ${action.name}')
 	}
 	return nodesdict
 }