Volume vs Price for Amibroker (AFL)

_SECTION_BEGIN("ROC-Close");
safeguard="This is developed by StockBangladesh Research and Development department if you need any asistance please contact us at amibroker@stockbangladesh.com";

pre=StrMid( safeguard,21, 15 );

stockbangladesh_periods = Param("Periods", 3, 1, 200, 1 );
stockbangladesh_ROCclose=ROC( C, stockbangladesh_periods);
Plot( ROC( C, StockBangladesh_periods), _DEFAULT_NAME(), ParamColor( "Color", colorCycle ), ParamStyle("Style") );
pre= StrMid( safeguard, 33, 15 );

StockBangladesh_PriceUp = LinRegSlope( StockBangladesh_ROCclose, StockBangladesh_periods) > 0 ;

printf("PriceUp =%f\n", StockBangladesh_PriceUp);

_SECTION_END();

_SECTION_BEGIN("ROC-Volume");
StockBangladesh_periods = Param("Periods", 3, 1, 200, 1 );
Plot( ROC( V, StockBangladesh_periods), _DEFAULT_NAME(), ParamColor( "Color", colorGreen ), ParamStyle("Style") );

StockBangladesh_ROCvolume=ROC( V, StockBangladesh_periods);
StockBangladesh_VolumeUp = LinRegSlope( StockBangladesh_ROCvolume, StockBangladesh_periods) > 0 ;

printf("VolumeUp =%f\n", StockBangladesh_VolumeUp);

StockBangladesh_BullishDiv = NOT StockBangladesh_PriceUP AND StockBangladesh_ROCvolume;
StockBangladesh_BearishDiv = StockBangladesh_PriceUP AND NOT StockBangladesh_VolumeUp;
Filter = StockBangladesh_BullishDiv OR StockBangladesh_BearishDiv;
pre="Volume vs Price";
AddColumn( StockBangladesh_BullishDiv, "Bullish Divergence", 1.0,
colorDefault, IIf(StockBangladesh_BullishDiv, colorGreen, colorDefault ) );
AddColumn( StockBangladesh_BearishDiv , "Bearish Divergence", 1.0,
colorDefault, IIf(StockBangladesh_BearishDiv , colorRed, colorDefault) );

GfxSetOverlayMode(1);
GfxSelectFont("Tahoma", Status("pxheight")/12 );
GfxSetTextAlign( 6 );// center alignment
GfxSetTextColor( ColorRGB( 200, 200, 200 ) );
GfxSetBkMode(1); // transparent
GfxTextOut( pre, Status("pxwidth")/2, Status("pxheight")/6 );

_SECTION_END();