Repaint with soft brush

Hello everybody,
maybe someone can help me with a little problem:
I try to repaint a filled area with a soft brush (soft edges and low opacity). But i allways get a normal hard brush (hard edges and full opacity).
So what am I doing wrong?
Regards, Steven

The brush is tool to draw (ex, texture brush that you are using) a line and the fill the color uses selected the color from color pot in the palette to fill the color. So when you draw a line with texture brush will have a transparency on the edges but when you fill the color, it use the color of the brush, not the texture brush feature in result. You need to apply the color with gradient or using other technique (ex, effects) depending on what kind of result you want to have.