Strategy Builder in Interactive brokers

[GeneralV]

Hi lady and guys,

After I create a option combo on IB by strategy builder and want to change the price of the order. It often prompt a warning message "please review the order details, there is an attempt to apply an invalid price" as shown in the picture.

1. Anyone can tell me whats wrong is it ???
2. Is IB only support to input ONE price for ONE combo only????
Thanks.

 

[ktm]

Once you get above $5.00 for the price, IB only supports .25 (cent) increments. In the case above, -39.50 or -39.75 would be accepted.

 

[GeneralV]

Oh, I see. Thanks.