[Sina.Li]

I am new to GroovyBC but will try to explain the issue. I have built the last version of GroovyBC on openfoam 5. Now trying to apply a non-uniform velocity as an inlet boundary condition to a jet fan suspending in the air (solver: simpleFoam). This is the BC I set:

     fanOutlet
    {
        type                groovyBC;
        variables "Uavg=-7;yp=pts().y;xp=pts().x;minY=min(yp);maxY=max(yp);minX=min(xp);maxX=max(xp);ctrX=0.5*(min(xp)+max(xp));ctrY=0.5*(min(yp)+max(yp));";
        valueExpression "(Uavg/0.64)*(1-pow((pos().x-ctrX)/ctrX,4)*(1-pow((pos().y-ctrY)/ctrY,4)*normal()";
        value           uniform (0 0 -7);
    }

and when trying to run, I get the following message and the run before starting ends:

swak4Foam: Allocating new repository for sampledGlobalVariables

tried to debug: When changing the expression to a constant it works. when changing pts() to pos() (to check if it is compilation problem) then it would start the run, but from the beginning it diverges.

PS: just attached the screenshot when running with uniform fixed velocity.