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connectAttr [-force] [-lock boolean] [-nextAvailable] [-referenceDest string] attribute attribute

connectAttr is undoable, NOT queryable, and NOT editable.

Connect the attributes of two dependency nodes and return the names of the two connected attributes. The connected attributes must be be of compatible types. First argument is the source attribute, second one is the destination.

Refer to dependency node documentation.

Return value

stringA phrase containing the names of the connected attributes.


connectionInfo, isConnected, listConnections


force, lock, nextAvailable, referenceDest
Long name (short name) Argument types Properties
-lock(-l) boolean create
If the argument is true, the destination attribute is locked after making the connection. If the argument is false, the connection is unlocked before making the connection.
-force(-f) create
Forces the connection. If the destination is already connected, the old connection is broken and the new one made.
-nextAvailable(-na) create
If the destination multi-attribute has set the indexMatters to be false with this flag specified, a connection is made to the next available index. No index need be specified.
-referenceDest(-rd) string create
This flag is used for file io only. The flag indicates that the connection replaces a connection made in a referenced file, and the flag argument indicates the original destination from the referenced file. This flag is used so that if the reference file is modified, maya can still attempt to make the appropriate connections in the main scene to the referenced object.

Flag can appear in Create mode of command Flag can appear in Edit mode of command
Flag can appear in Query mode of command Flag can be used more than once in a command.

MEL examples

createNode transform -n firstGuy;
createNode transform -n secondGuy;

// Connect the translation of two nodes together
connectAttr firstGuy.t secondGuy.translate;

// Connect the rotation of one node to the override colour
// of a second node.
connectAttr firstGuy.rotate secondGuy.overrideColor;