请教指定时间的AFL

如题：
现希望在每天9:59AM作买卖决定，条件是：Buy=Cross(C,x); Sell=Cross(x,C);
也就是在9:59时如巳处于买条件则立即买，反之而然。

谢谢。

 

SYNTAX ParamTime( ''Name'', ''Default time'', format = 0 );
RETURNS NUMBER or STRING
FUNCTION Adds a new user-definable time parameter, which will be accessible via Parameters dialog :
right click over chart pane and select "Parameters" or press Ctrl+R allows to change chart parameters - changes are reflected immediatelly.

"name" - defines parameter name that will be displayed in the parameters dialog
"default time" - is a string holding time in any any format: HH:MM:SS, HH:MM, etc.
format - defines return value format, allowable values are:
0 - return value is a NUMBER and holds TimeNum. Ie: 133515 for 13:35:15
1 - return value is a STRING formatted holding time according to your windows regional settings

atime=paramtime(...................
if (now(4)==atime) .............

 

我表达不清楚，这是一日内交易策略：每天在某一时间(这里选9:59AM)一定要做第一个交易(Long or Short)，而此时符合Buy 条件的就Long，反之则Short。

 

trade_time = ParamTime( " Trade End", "09:59:59" ) ;
if (lastvalue(now(4)==trade_time and (buy or sell)))
{.................}

 

buy = TimeNum() == 095959 AND .....

 

谢谢楼上两位。