setProperty(child, key, value, operation, force) → {boolean}
Sets a property to the given value on the child. The operation parameter controls how the value is set.
The operations are:
- 0: set the existing value to the given value; if force is 
truea new property will be created if needed - 1: will add the given value to the value already present.
 - 2: will subtract the given value from the value already present.
 - 3: will multiply the value already present by the given value.
 - 4: will divide the value already present by the given value.
 
Parameters
| Name | Type | Argument | Default | Description | 
|---|---|---|---|---|
child |  any | The child to set the property value on.  |  ||
key |  array | An array of strings that make up the property that will be set.  |  ||
value |  any | The value that will be set.  |  ||
operation |  integer |  <optional> |  0 | Controls how the value is assigned. A value of 0 replaces the value with the new one. A value of 1 adds it, 2 subtracts it, 3 multiplies it and 4 divides it.  |  
force |  boolean |  <optional> |  false | If   |  
Returns
True if the property was set, false if not.
- Inherited From
 - Source code: core/Group.js (Line 1139)
 
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