Linear Sketch Pattern Spacing too small

I am trying to create a simple linear sketch pattern of multiple slots in a row. I need each slot to be 5mm apart, so I am trying to use 5mm x-spacing. However, it says I can only enter a number between 0.00m and 499.99m. Because it will only let me use 2 decimal places, 0.005m is automatically rounded up to 0.01m. Is there anyway I can change the minimum spacing in a linear sketch pattern so that I can use spacings smaller than 0.01m? 

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