Fix default variable name
Fix default variable name

rachel-fenichel/blockly,rachel-fenichel/blockly,rachel-fenichel/blockly,nickmain/blockly,google/blockly,jstnhuang/blockly,google/blockly,nickmain/blockly,joshlory/blockly,jstnhuang/blockly,twodee/blockly,mark-friedman/blockly,twodee/blockly,picklesrus/blockly,nickmain/blockly,groklearning/blockly,nickmain/blockly,trodi/blockly,mark-friedman/blockly,google/blockly,mark-friedman/blockly,rachel-fenichel/blockly,mark-friedman/blockly,google/blockly,twodee/blockly,rachel-fenichel/blockly,rachel-fenichel/blockly,trodi/blockly,trinketapp/blockly,jstnhuang/blockly,joshlory/blockly,groklearning/blockly,picklesrus/blockly,trinketapp/blockly,twodee/blockly,trinketapp/blockly,trodi/blockly,trodi/blockly,google/blockly,picklesrus/blockly,groklearning/blockly,google/blockly,nickmain/blockly,google/blockly,jstnhuang/blockly,rachel-fenichel/blockly,joshlory/blockly,nickmain/blockly,twodee/blockly,mark-friedman/blockly,twodee/blockly,groklearning/blockly,mark-friedman/blockly,trinketapp/blockly