Fix pine script code where I need to compare previous two prices with actual price

I need to fix my code where I want compare two previous open prices with specific condition and actual open price candle with same condition. I am showing only part of the code which is not working. All variables are set correctly but I am not able to get open price information for xxOpen1 and xxOpen2 and then plot in label. I am getting study error. Compiling is without any error but overall study is not working on chart. Here is my code: openHistory = [login to view URL]([login to view URL], "15S", open, lookahead=barmerge.lookahead_on) for i = 0 to 30 wt101Condition = wt101[i] > wt201[i] and wtDot[i] == 1 and (wt102[i] < 0 or wt202[i] < 0) if (wt101Condition) // Calculate historical xxPrice, xxOpen1, and xxOpen2 using an offset xxPrice := open[i] xxWT101 := wt101[i] xxWT201 := wt201[i] // Extract historical open prices using array indexing xxOpen1 := openHistory[i - 1] xxOpen2 := openHistory[i - 2] // Set the flag to color the next XX shouldColorNextXX := true // Create or update the label for each bar if ([login to view URL](xxLabels) <= i) [login to view URL](xxLabels, [login to view URL](x=bar_index - i, y=xxPrice, text="XPrice: " + [login to view URL](xxPrice) + " Open1: " + [login to view URL](xxOpen1) + " Open2: " + [login to view URL](xxOpen2) + " WAVE" + [login to view URL](xxWT101) + " WAVE" + [login to view URL](xxWT201), style=label.style_label_lower_left, color=[login to view URL], textcolor=[login to view URL], size=[login to view URL])) else label.set_xy([login to view URL](xxLabels, i), x=bar_index - i, y=xxPrice) label.set_text([login to view URL](xxLabels, i), "XPrice: " + [login to view URL](xxPrice) + " Open1: " + [login to view URL](xxOpen1) + " Open2: " + [login to view URL](xxOpen2) + " WAVE" + [login to view URL](xxWT101) + " WAVE" + [login to view URL](xxWT201))