So I’m on the lost viking level and whenever I press run it says "Line 25: moveXY requires 2 numbers as arguments. y is NaN which is type ‘number’, not ‘number’."

Does anybody get this?

```
# You MUST click on the HELP button to see a detailed description of this level!
# The raven will tell you what to use for your maze parameters!
SLIDE = 10
SWITCH = 7
SKIP = 11
# How many sideSteps north of the Red X you've taken.
sideSteps = 1
# How many steps east of the Red X you've taken.
steps = 1
# Multiply this with steps to determine your X coordinate. DON'T CHANGE THIS!
X_PACE_LENGTH = 4
# Multiply this with sideSteps to determine your Y coordinate. DON'T CHANGE THIS!
Y_PACE_LENGTH = 6
# The maze is 35 steps along the X axis.
while steps <= 35:
xpos = steps * X_PACE_LENGTH
ypos = sideSteps * Y_PACE_LENGTH
# Take the next step:
self.moveXY(xpos, ypos)
# Increment steps and sideSteps as appropriate, taking into account the special rules.
if steps % SWITCH == 0:
x *= -1
if steps % SKIP == 0:
x *= 2
if steps - 1 % SKIP == 0 and steps != 1:
x /= 2
sideSteps += x
if sideSteps > SLIDE:
sideSteps = 1
elif sideSteps < 1:
sideSteps = SLIDE
steps += 1
```