Master Forex Dashboard: Sessions, Volume & MTF Trend

//version=5
indicator("Master Forex Dashboard: Sessions, Volume & MTF Trend", overlay=true, max_boxes_count=500)

// ==========================================
// 1. SESSIONS LOGIC
// ==========================================
showAsia = input.bool(true, "Show Asia Session", group="Forex Sessions")
asiaTime = input.session("0000-0900", "Asia Session Time", group="Forex Sessions")
asiaColor = input.color(color.new(color.blue, 90), "Asia Color", group="Forex Sessions")

showLondon = input.bool(true, "Show London Session", group="Forex Sessions")
londonTime = input.session("0800-1700", "London Session Time", group="Forex Sessions")
londonColor= input.color(color.new(color.orange, 90), "London Color", group="Forex Sessions")

showNY = input.bool(true, "Show NY Session", group="Forex Sessions")
nyTime = input.session("1300-2200", "NY Session Time", group="Forex Sessions")
nyColor = input.color(color.new(color.red, 90), "NY Color", group="Forex Sessions")

is_session(sess) => not na(time(timeframe.period, sess, "UTC+0"))

bgcolor(showAsia and is_session(asiaTime) ? asiaColor : na)
bgcolor(showLondon and is_session(londonTime) ? londonColor : na)
bgcolor(showNY and is_session(nyTime) ? nyColor : na)

// ==========================================
// 2. VOLUME LOGIC
// ==========================================
volLen = input.int(20, "Volume MA Length", group="Volume Logic")
highMult = input.float(1.5, "High Vol Multiplier", group="Volume Logic")
lowMult = input.float(0.5, "Low Vol Multiplier", group="Volume Logic")

volMA = ta.sma(volume, volLen)
isHighVol = volume > (volMA * highMult)
isLowVol = volume < (volMA * lowMult)

barcolor(isHighVol ? color.yellow : isLowVol ? color.gray : na)

// ==========================================
// 3. MTF TREND DASHBOARD (FIXED)
// ==========================================
emaLen = input.int(200, "Trend EMA Length", group="Dashboard")
textSize = input.string("small", "Table Text Size", options=["tiny", "small", "normal"], group="Dashboard")

// Function defined at GLOBAL scope to avoid your error
f_fill_row(table_id, row, label, trendVal, tSize) =>
bgColor = trendVal == 1 ? color.new(color.green, 30) : color.new(color.red, 30)
txt = trendVal == 1 ? "BULLISH" : "BEARISH"
table.cell(table_id, 0, row, label, text_color=color.white, text_size=tSize)
table.cell(table_id, 1, row, txt, bgcolor=bgColor, text_color=color.white, text_size=tSize)

get_trend(tf) =>
htfEMA = request.security(syminfo.tickerid, tf, ta.ema(close, emaLen))
htfClose = request.security(syminfo.tickerid, tf, close)
htfClose > htfEMA ? 1 : -1

// Fetch Data
t15 = get_trend("15"), t1h = get_trend("60"), t4h = get_trend("240"), t1d = get_trend("1D")

// Table UI
var table trendTable = table.new(position.top_right, 2, 5, border_width = 1)

if barstate.islast
table.cell(trendTable, 0, 0, "TF", bgcolor=color.gray, text_color=color.white, text_size=textSize)
table.cell(trendTable, 1, 0, "Trend", bgcolor=color.gray, text_color=color.white, text_size=textSize)
f_fill_row(trendTable, 1, "15m", t15, textSize)
f_fill_row(trendTable, 2, "1H", t1h, textSize)
f_fill_row(trendTable, 3, "4H", t4h, textSize)
f_fill_row(trendTable, 4, "1D", t1d, textSize)