INTERIM CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	6 Months Ended
	Oct. 31, 2013	Oct. 31, 2012
Cash flows from operating activities:
Net income (loss) for the period	$ (3,336,519)	$ 542,433
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation and amortization	112,974	81,830
Amortization of intangible assets	0	19,591
Deferred lease inducements	(15,540)	0
Stock-based compensation	637,043	611,375
Fair value adjustment on derivative instruments	(73,413)	(993,164)
Foreign exchange gain (loss)	(1,382)	4,537
Changes in assets and liabilities:
Accounts receivable	1,064,192	(715,238)
Prepaid expenses and deposits	35,864	86,818
Increase in other assets	(15,925)	(47,560)
Accounts payable and accrued liabilities	(69,067)	(76,320)
Unearned revenue	91,330	286,469
Accrued warranty	(13,930)	2,607
Net cash generated from (used in) operating activities	(1,584,373)	(196,622)
Cash flows from investing activities:
Purchase of equipment	(63,870)	(213,927)
Deposits	(5,824)	(42,560)
Net cash used in investing activities	(69,694)	(256,487)
Cash flows from financing activities:
Common stock issued	70,565	3,993,190
Common stock repurchased	(162,737)	0
Transaction costs	0	(15,592)
Net cash provided by (used) in financing activities	(92,172)	3,977,598
Foreign exchange effect on cash	(59,583)	(8,882)
Increase (decrease) in cash	(1,805,822)	3,515,607
Cash, beginning of the period	11,229,595	8,154,139
Cash, end of the period	9,423,773	11,669,746
Supplemental disclosure of cash flow information Cash paid for:
Interest	$ 932	$ 624