# Layer Creation Debug Guide
## Common Issues with Layer Creation in ExtendScript
1. **Optional chaining (`?.`)** - Not supported in ES3
2. **Complex logical expressions with `&&` and `||`** - Can behave unexpectedly
3. **Array/object destructuring** - Not supported
4. **Property access on undefined** - Causes immediate script failure
## Issues Found:
### add_solid_layer
- Fixed: Was using `params.color?.join(',')`
- Changed to: `params.color ? params.color.join(',') : '1,1,1'`
### batch_create_layers
- Issue: `layerDef.properties && layerDef.properties.color || [0, 0, 0]`
- This complex expression might fail if properties is undefined
## Testing Steps:
1. Create a composition first:
```
create_composition with name "Test Comp"
```
2. Note the composition ID from the response
3. Try adding a simple solid layer:
```
add_solid_layer with compId: [id from step 2]
```
4. Check the CEP panel log for any errors
## Potential Solutions:
1. Simplify all conditional expressions
2. Add explicit undefined checks
3. Use try-catch blocks around property access
