How to increase lenght or duration of brush?

Description of the Problem, or Question?

I imported some brush in MyPaint2.0, previously working on MyPaint1.0. Most of them work, some of them, even if I edit the duration of brush in brush settings, don’t work at all or just too short. Which parameter of the brush settings should I edit to make it paint longer or virtually forever (even if 14 seconds are more than enough actually) ?

Basic System Details

MyPaint version: 2.0 w64

Operating System + Version: Windows 7 Ultimate SP1 64bit (all important updates installed so far)

Make and Model # of Graphic Tablet:Wacom Bamboo Pen CTL460/K (but it happens also with mouse)

Please Tell Us How to Reproduce the Problem in Steps.

I don’t know actually, they’re some Ramon, Tanda and other brushes from previous MyPaint versions (like Smudge/Paint, Glow and I guess others will show same problem ?

Are there any Errors Popping Up? If so, paste the text in the area shown below.

No errors popping up, just the brushes not working as in the previous versions of MyPaint.

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