An operator is a symbol that represents a calculation or order of calculations. Operators typically perform arithmetic calculations, comparisons, and conditions such as addition (+), subtraction (-), multiplication (*), or division (/). Combinations of these operators are supported by numeric and timecode fields in MotionBuilder.
|  
					  Operation  | 
 
					  Description  | 
|---|---|
|  
					  +=(x)  | 
 
					  Adds the (x) value to the current numeric value.  | 
|  
					  -=(x)  | 
 
					  Subtracts the (x) value from the current numeric value.  | 
|  
					  *=(x)  | 
 
					  Multiplies the (x) value by the current numeric value.  | 
|  
					  /=(x)  | 
 
					  Divides the current numeric value by the (x) value.  | 
|  
					  ++  | 
 
					  Increases the current numeric value by 1.  | 
|  
					  --  | 
 
					  Decreases the current numeric value by 1.  | 
The following operations are supported by timecode fields that are displayed as frames:
|  
					  Operation  | 
 
					  Description  | 
|---|---|
|  
					  +=(x)  | 
 
					  Adds the (x) value to the current frame value.  | 
|  
					  -=(x)  | 
 
					  Subtracts the (x) value from the current frame value.  | 
|  
					  *=(x)  | 
 
					  Multiplies the (x) value by the current frame value.  | 
|  
					  /=(x)  | 
 
					  Divides the current frame value by the (x) value.  | 
|  
					  ++  | 
 
					  Increases the current frame value by 1.  | 
|  
					  --  | 
 
					  Decreases the current frame value by 1.  | 
The following operations are supported by timecode fields that are displayed as timecode:
|  
					  Operation  | 
 
					  Description  | 
|---|---|
|  
					  +=(HH:MM:SS:FF)  | 
 
					  Adds the (HH:MM:SS:FF) value to the current time value.  | 
|  
					  -=(HH:MM:SS:FF)  | 
 
					  Subtracts the (HH:MM:SS:FF) value from the current time value.  |