I use apex_page.get_url to prepare url in sql query in that way:

'javascript:window.open("'||apex_page.get_url(p_page=>'9', p_items=>'P9_A,P9_B,P9_C,P9_D,P9_E', 
p_values=> Z.COLUMN_VAL||','||:P8_B||','||:P8_C||','||:P8_D||','||:P8_E, 
p_clear_cache=> '9') ||'" ,"_blank")' as LINKDETAIL

but P8_D item is a checkbox and it have colon(:) delimited list so when I navigate through this URl values not pass properly of this item and the item next to it which P8_E so then I try to use with P8_D but it gives syntax error on browser.

'javascript:window.open("'||apex_page.get_url(p_page=>'9', p_items=>'P9_A,P9_B,P9_C,P9_D,P9_E', 
p_values=> Z.COLUMN_VAL||','||:P8_B||','||:P8_C||','||'"\"'||:P8_D||'"\"'||','||:P8_E, 
p_clear_cache=> '9') ||'" ,"_blank")' as LINKDETAIL

but not work with this singe or double . Please suggest what might be going wrong.