The indicator shows the minimum price for the period fixed in the input parameters of the indicator:
//+------------------------------------------------+ //| indicator input parameters                   | //+------------------------------------------------+ input string level_name="Price_LOWEST_LOW_VALUE_1";  // Level name input string level_comment="Trigger level";  // A comment to the level input uint  level_period=5;                        // Level search period input uint  level_start=0;                          // The number of the starting bar input color level_color=clrRed;                      // Level color input ENUM_LINE_STYLE level_style=STYLE_SOLID;      // The style of the trigger level input ENUM_WIDTH level_width=w_3;                    // The width of the trigger level input bool Deletelevel=true;                        // Deleting a level
Figure 1. Indicator LOWEST_LOW_VALUE